diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f04a6d8..e09ae67f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,9 @@ This file is a running track of new features and fixes to each version of the pa
 
 This project follows [Semantic Versioning](http://semver.org) guidelines.
 
+## v1.2.2
+* **[security]** Fixes authentication bypass allowing a user to take control of specific server actions such as executing schedules, rotating database passwords, and viewing or deleting a backup.
+
 ## v1.2.1
 ### Fixed
 * Fixes URL-encoding of filenames when working in the filemanager to fix issues when moving, renaming, or deleting files.
diff --git a/app/Helpers/Utilities.php b/app/Helpers/Utilities.php
index d6b4e752..6e8e9223 100644
--- a/app/Helpers/Utilities.php
+++ b/app/Helpers/Utilities.php
@@ -42,13 +42,14 @@ class Utilities
      * @param string $minute
      * @param string $hour
      * @param string $dayOfMonth
+     * @param string $month
      * @param string $dayOfWeek
      * @return \Carbon\Carbon
      */
-    public static function getScheduleNextRunDate(string $minute, string $hour, string $dayOfMonth, string $dayOfWeek)
+    public static function getScheduleNextRunDate(string $minute, string $hour, string $dayOfMonth, string $month, string $dayOfWeek)
     {
         return Carbon::instance(CronExpression::factory(
-            sprintf('%s %s %s * %s', $minute, $hour, $dayOfMonth, $dayOfWeek)
+            sprintf('%s %s %s %s %s', $minute, $hour, $dayOfMonth, $month, $dayOfWeek)
         )->getNextRunDate());
     }
 
diff --git a/app/Http/Controllers/Api/Client/Servers/ScheduleController.php b/app/Http/Controllers/Api/Client/Servers/ScheduleController.php
index a9310abd..0d7241a6 100644
--- a/app/Http/Controllers/Api/Client/Servers/ScheduleController.php
+++ b/app/Http/Controllers/Api/Client/Servers/ScheduleController.php
@@ -84,6 +84,7 @@ class ScheduleController extends ClientApiController
             'server_id' => $server->id,
             'name' => $request->input('name'),
             'cron_day_of_week' => $request->input('day_of_week'),
+            'cron_month' => $request->input('month'),
             'cron_day_of_month' => $request->input('day_of_month'),
             'cron_hour' => $request->input('hour'),
             'cron_minute' => $request->input('minute'),
@@ -136,6 +137,7 @@ class ScheduleController extends ClientApiController
         $data = [
             'name' => $request->input('name'),
             'cron_day_of_week' => $request->input('day_of_week'),
+            'cron_month' => $request->input('month'),
             'cron_day_of_month' => $request->input('day_of_month'),
             'cron_hour' => $request->input('hour'),
             'cron_minute' => $request->input('minute'),
@@ -211,6 +213,7 @@ class ScheduleController extends ClientApiController
                 $request->input('minute'),
                 $request->input('hour'),
                 $request->input('day_of_month'),
+                $request->input('month'),
                 $request->input('day_of_week')
             );
         } catch (Exception $exception) {
diff --git a/app/Http/Middleware/Api/Client/Server/AllocationBelongsToServer.php b/app/Http/Middleware/Api/Client/Server/AllocationBelongsToServer.php
deleted file mode 100644
index d027d563..00000000
--- a/app/Http/Middleware/Api/Client/Server/AllocationBelongsToServer.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-namespace Pterodactyl\Http\Middleware\Api\Client\Server;
-
-use Closure;
-use Illuminate\Http\Request;
-use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
-
-class AllocationBelongsToServer
-{
-    /**
-     * Ensure that the allocation found in the URL belongs to the server being queried.
-     *
-     * @param \Illuminate\Http\Request $request
-     * @param \Closure $next
-     * @return mixed
-     *
-     * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
-     */
-    public function handle(Request $request, Closure $next)
-    {
-        /** @var \Pterodactyl\Models\Server $server */
-        $server = $request->route()->parameter('server');
-        /** @var \Pterodactyl\Models\Allocation|null $allocation */
-        $allocation = $request->route()->parameter('allocation');
-
-        if ($allocation && $allocation->server_id !== $server->id) {
-            throw new NotFoundHttpException;
-        }
-
-        return $next($request);
-    }
-}
diff --git a/app/Http/Middleware/Api/Client/Server/ResourceBelongsToServer.php b/app/Http/Middleware/Api/Client/Server/ResourceBelongsToServer.php
new file mode 100644
index 00000000..b57fee2e
--- /dev/null
+++ b/app/Http/Middleware/Api/Client/Server/ResourceBelongsToServer.php
@@ -0,0 +1,92 @@
+<?php
+
+namespace Pterodactyl\Http\Middleware\Api\Client\Server;
+
+use Closure;
+use Illuminate\Http\Request;
+use Pterodactyl\Models\Task;
+use Pterodactyl\Models\User;
+use InvalidArgumentException;
+use Pterodactyl\Models\Server;
+use Pterodactyl\Models\Backup;
+use Pterodactyl\Models\Subuser;
+use Pterodactyl\Models\Schedule;
+use Pterodactyl\Models\Database;
+use Pterodactyl\Models\Allocation;
+use Illuminate\Database\Eloquent\Model;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+
+class ResourceBelongsToServer
+{
+    /**
+     * Looks at the request parameters to determine if the given resource belongs
+     * to the requested server. If not, a 404 error will be returned to the caller.
+     *
+     * This is critical to ensuring that all subsequent logic is using exactly the
+     * server that is expected, and that we're not accessing a resource completely
+     * unrelated to the server provided in the request.
+     *
+     * @param \Illuminate\Http\Request $request
+     * @param \Closure $next
+     * @return mixed
+     */
+    public function handle(Request $request, Closure $next)
+    {
+        $params = $request->route()->parameters();
+        if (is_null($params) || ! $params['server'] instanceof Server) {
+            throw new InvalidArgumentException('This middleware cannot be used in a context that is missing a server in the parameters.');
+        }
+
+        /** @var \Pterodactyl\Models\Server $server */
+        $server = $request->route()->parameter('server');
+        $exception = new NotFoundHttpException('The requested resource was not found for this server.');
+        foreach ($params as $key => $model) {
+            // Specifically skip the server, we're just trying to see if all of the
+            // other resources are assigned to this server. Also skip anything that
+            // is not currently a Model instance since those will just end up being
+            // a 404 down the road.
+            if ($key === 'server' || ! $model instanceof Model) {
+                continue;
+            }
+
+            switch (get_class($model)) {
+                // All of these models use "server_id" as the field key for the server
+                // they are assigned to, so the logic is identical for them all.
+                case Allocation::class:
+                case Backup::class:
+                case Database::class:
+                case Schedule::class:
+                case Subuser::class:
+                    if ($model->server_id !== $server->id) {
+                        throw $exception;
+                    }
+                    break;
+                // Regular users are a special case here as we need to make sure they're
+                // currently assigned as a subuser on the server.
+                case User::class:
+                    $subuser = $server->subusers()->where('user_id', $model->id)->first();
+                    if (is_null($subuser)) {
+                        throw $exception;
+                    }
+                    // This is a special case to avoid an additional query being triggered
+                    // in the underlying logic.
+                    $request->attributes->set('subuser', $subuser);
+                    break;
+                // Tasks are special since they're (currently) the only item in the API
+                // that requires something in addition to the server in order to be accessed.
+                case Task::class:
+                    $schedule = $request->route()->parameter('schedule');
+                    if ($model->schedule_id !== $schedule->id || $schedule->server_id !== $server->id) {
+                        throw $exception;
+                    }
+                    break;
+                default:
+                    // Don't return a 404 here since we want to make sure no one relies
+                    // on this middleware in a context in which it will not work. Fail safe.
+                    throw new InvalidArgumentException('There is no handler configured for a resource of this type: ' . get_class($model));
+            }
+        }
+
+        return $next($request);
+    }
+}
diff --git a/app/Http/Middleware/Api/Client/Server/SubuserBelongsToServer.php b/app/Http/Middleware/Api/Client/Server/SubuserBelongsToServer.php
deleted file mode 100644
index a80f6eef..00000000
--- a/app/Http/Middleware/Api/Client/Server/SubuserBelongsToServer.php
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-
-namespace Pterodactyl\Http\Middleware\Api\Client\Server;
-
-use Closure;
-use Illuminate\Http\Request;
-
-class SubuserBelongsToServer
-{
-    /**
-     * Ensure that the user being accessed in the request is a user that is currently assigned
-     * as a subuser for this server instance. We'll let the requests themselves handle wether or
-     * not the user making the request can actually modify or delete the subuser record.
-     *
-     * @param \Illuminate\Http\Request $request
-     * @param \Closure $next
-     *
-     * @return mixed
-     */
-    public function handle(Request $request, Closure $next)
-    {
-        /** @var \Pterodactyl\Models\Server $server */
-        $server = $request->route()->parameter('server');
-        /** @var \Pterodactyl\Models\User $user */
-        $user = $request->route()->parameter('user');
-
-        // Don't do anything if there isn't a user present in the request.
-        if (is_null($user)) {
-            return $next($request);
-        }
-
-        $request->attributes->set('subuser', $server->subusers()->where('user_id', $user->id)->firstOrFail());
-
-        return $next($request);
-    }
-}
diff --git a/app/Models/Schedule.php b/app/Models/Schedule.php
index de047563..6d23f5c1 100644
--- a/app/Models/Schedule.php
+++ b/app/Models/Schedule.php
@@ -12,6 +12,7 @@ use Pterodactyl\Contracts\Extensions\HashidsInterface;
  * @property int $server_id
  * @property string $name
  * @property string $cron_day_of_week
+ * @property string $cron_month
  * @property string $cron_day_of_month
  * @property string $cron_hour
  * @property string $cron_minute
@@ -58,6 +59,7 @@ class Schedule extends Model
         'server_id',
         'name',
         'cron_day_of_week',
+        'cron_month',
         'cron_day_of_month',
         'cron_hour',
         'cron_minute',
@@ -93,6 +95,7 @@ class Schedule extends Model
     protected $attributes = [
         'name' => null,
         'cron_day_of_week' => '*',
+        'cron_month' => '*',
         'cron_day_of_month' => '*',
         'cron_hour' => '*',
         'cron_minute' => '*',
@@ -107,6 +110,7 @@ class Schedule extends Model
         'server_id' => 'required|exists:servers,id',
         'name' => 'required|string|max:191',
         'cron_day_of_week' => 'required|string',
+        'cron_month' => 'required|string',
         'cron_day_of_month' => 'required|string',
         'cron_hour' => 'required|string',
         'cron_minute' => 'required|string',
@@ -123,7 +127,7 @@ class Schedule extends Model
      */
     public function getNextRunDate()
     {
-        $formatted = sprintf('%s %s %s * %s', $this->cron_minute, $this->cron_hour, $this->cron_day_of_month, $this->cron_day_of_week);
+        $formatted = sprintf('%s %s %s %s %s', $this->cron_minute, $this->cron_hour, $this->cron_day_of_month, $this->cron_month, $this->cron_day_of_week);
 
         return CarbonImmutable::createFromTimestamp(
             CronExpression::factory($formatted)->getNextRunDate()->getTimestamp()
diff --git a/app/Transformers/Api/Client/ScheduleTransformer.php b/app/Transformers/Api/Client/ScheduleTransformer.php
index 43e35ed4..09e8708e 100644
--- a/app/Transformers/Api/Client/ScheduleTransformer.php
+++ b/app/Transformers/Api/Client/ScheduleTransformer.php
@@ -40,6 +40,7 @@ class ScheduleTransformer extends BaseClientTransformer
             'cron' => [
                 'day_of_week' => $model->cron_day_of_week,
                 'day_of_month' => $model->cron_day_of_month,
+                'month' => $model->cron_month,
                 'hour' => $model->cron_hour,
                 'minute' => $model->cron_minute,
             ],
diff --git a/database/factories/ModelFactory.php b/database/factories/ModelFactory.php
index 4997a9b6..e6468f5f 100644
--- a/database/factories/ModelFactory.php
+++ b/database/factories/ModelFactory.php
@@ -7,6 +7,8 @@ use Illuminate\Support\Str;
 use Pterodactyl\Models\Node;
 use Faker\Generator as Faker;
 use Pterodactyl\Models\ApiKey;
+use Pterodactyl\Models\Backup;
+use Pterodactyl\Models\Permission;
 
 /** @var \Illuminate\Database\Eloquent\Factory $factory */
 /*
@@ -134,7 +136,9 @@ $factory->state(Pterodactyl\Models\EggVariable::class, 'editable', function () {
 });
 
 $factory->define(Pterodactyl\Models\Subuser::class, function (Faker $faker) {
-    return [];
+    return [
+        'permissions' => [Permission::ACTION_WEBSOCKET_CONNECT],
+    ];
 });
 
 $factory->define(Pterodactyl\Models\Allocation::class, function (Faker $faker) {
@@ -161,7 +165,7 @@ $factory->define(Pterodactyl\Models\Database::class, function (Faker $faker) {
         'database' => str_random(10),
         'username' => str_random(10),
         'remote' => '%',
-        'password' => $password ?: bcrypt('test123'),
+        'password' => $password ?: encrypt('test123'),
         'created_at' => Carbon::now()->toDateTimeString(),
         'updated_at' => Carbon::now()->toDateTimeString(),
     ];
@@ -196,3 +200,12 @@ $factory->define(Pterodactyl\Models\ApiKey::class, function (Faker $faker) {
         'updated_at' => Carbon::now()->toDateTimeString(),
     ];
 });
+
+$factory->define(Pterodactyl\Models\Backup::class, function (Faker $faker) {
+    return [
+        'uuid' => Uuid::uuid4()->toString(),
+        'is_successful' => true,
+        'name' => $faker->sentence,
+        'disk' => Backup::ADAPTER_WINGS,
+    ];
+});
diff --git a/database/migrations/2021_01_13_013420_add_cron_month.php b/database/migrations/2021_01_13_013420_add_cron_month.php
new file mode 100644
index 00000000..c449a53e
--- /dev/null
+++ b/database/migrations/2021_01_13_013420_add_cron_month.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddCronMonth extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('schedules', function (Blueprint $table) {
+            $table->string('cron_month')->after('cron_day_of_week');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('schedules', function (Blueprint $table) {
+            $table->dropColumn('cron_month');
+        });
+    }
+}
diff --git a/resources/scripts/api/server/schedules/createOrUpdateSchedule.ts b/resources/scripts/api/server/schedules/createOrUpdateSchedule.ts
index 0545650b..481cea77 100644
--- a/resources/scripts/api/server/schedules/createOrUpdateSchedule.ts
+++ b/resources/scripts/api/server/schedules/createOrUpdateSchedule.ts
@@ -11,6 +11,7 @@ export default (uuid: string, schedule: Data): Promise<Schedule> => {
             minute: schedule.cron.minute,
             hour: schedule.cron.hour,
             day_of_month: schedule.cron.dayOfMonth,
+            month: schedule.cron.month,
             day_of_week: schedule.cron.dayOfWeek,
         })
             .then(({ data }) => resolve(rawDataToServerSchedule(data.attributes)))
diff --git a/resources/scripts/api/server/schedules/getServerSchedules.ts b/resources/scripts/api/server/schedules/getServerSchedules.ts
index 42514582..f7a07617 100644
--- a/resources/scripts/api/server/schedules/getServerSchedules.ts
+++ b/resources/scripts/api/server/schedules/getServerSchedules.ts
@@ -5,6 +5,7 @@ export interface Schedule {
     name: string;
     cron: {
         dayOfWeek: string;
+        month: string;
         dayOfMonth: string;
         hour: string;
         minute: string;
@@ -46,6 +47,7 @@ export const rawDataToServerSchedule = (data: any): Schedule => ({
     name: data.name,
     cron: {
         dayOfWeek: data.cron.day_of_week,
+        month: data.cron.month,
         dayOfMonth: data.cron.day_of_month,
         hour: data.cron.hour,
         minute: data.cron.minute,
diff --git a/resources/scripts/components/dashboard/DashboardContainer.tsx b/resources/scripts/components/dashboard/DashboardContainer.tsx
index b4cb4c29..2edc0605 100644
--- a/resources/scripts/components/dashboard/DashboardContainer.tsx
+++ b/resources/scripts/components/dashboard/DashboardContainer.tsx
@@ -16,8 +16,9 @@ import Pagination from '@/components/elements/Pagination';
 export default () => {
     const { clearFlashes, clearAndAddHttpError } = useFlash();
     const [ page, setPage ] = useState(1);
-    const { rootAdmin } = useStoreState(state => state.user.data!);
-    const [ showOnlyAdmin, setShowOnlyAdmin ] = usePersistedState('show_all_servers', false);
+    const uuid = useStoreState(state => state.user.data!.uuid);
+    const rootAdmin = useStoreState(state => state.user.data!.rootAdmin);
+    const [ showOnlyAdmin, setShowOnlyAdmin ] = usePersistedState(`${uuid}:show_all_servers`, false);
 
     const { data: servers, error } = useSWR<PaginatedResult<Server>>(
         [ '/api/client/servers', showOnlyAdmin, page ],
diff --git a/resources/scripts/components/server/schedules/EditScheduleModal.tsx b/resources/scripts/components/server/schedules/EditScheduleModal.tsx
index 73f74f2c..e0df9e98 100644
--- a/resources/scripts/components/server/schedules/EditScheduleModal.tsx
+++ b/resources/scripts/components/server/schedules/EditScheduleModal.tsx
@@ -19,6 +19,7 @@ type Props = {
 interface Values {
     name: string;
     dayOfWeek: string;
+    month: string;
     dayOfMonth: string;
     hour: string;
     minute: string;
@@ -38,7 +39,7 @@ const EditScheduleModal = ({ schedule, ...props }: Omit<Props, 'onScheduleUpdate
                     label={'Schedule name'}
                     description={'A human readable identifer for this schedule.'}
                 />
-                <div css={tw`grid grid-cols-2 sm:grid-cols-4 gap-4 mt-6`}>
+                <div css={tw`grid grid-cols-2 sm:grid-cols-5 gap-4 mt-6`}>
                     <div>
                         <Field name={'minute'} label={'Minute'}/>
                     </div>
@@ -48,6 +49,9 @@ const EditScheduleModal = ({ schedule, ...props }: Omit<Props, 'onScheduleUpdate
                     <div>
                         <Field name={'dayOfMonth'} label={'Day of month'}/>
                     </div>
+                    <div>
+                        <Field name={'month'} label={'Month'}/>
+                    </div>
                     <div>
                         <Field name={'dayOfWeek'} label={'Day of week'}/>
                     </div>
@@ -94,6 +98,7 @@ export default ({ schedule, visible, ...props }: Props) => {
                 minute: values.minute,
                 hour: values.hour,
                 dayOfWeek: values.dayOfWeek,
+                month: values.month,
                 dayOfMonth: values.dayOfMonth,
             },
             isActive: values.enabled,
@@ -116,10 +121,11 @@ export default ({ schedule, visible, ...props }: Props) => {
             onSubmit={submit}
             initialValues={{
                 name: schedule?.name || '',
-                dayOfWeek: schedule?.cron.dayOfWeek || '*',
-                dayOfMonth: schedule?.cron.dayOfMonth || '*',
-                hour: schedule?.cron.hour || '*',
                 minute: schedule?.cron.minute || '*/5',
+                hour: schedule?.cron.hour || '*',
+                dayOfMonth: schedule?.cron.dayOfMonth || '*',
+                month: schedule?.cron.month || '*',
+                dayOfWeek: schedule?.cron.dayOfWeek || '*',
                 enabled: schedule ? schedule.isActive : true,
             } as Values}
             validationSchema={null}
diff --git a/resources/scripts/components/server/schedules/ScheduleCronRow.tsx b/resources/scripts/components/server/schedules/ScheduleCronRow.tsx
index e7918a13..2a733b2d 100644
--- a/resources/scripts/components/server/schedules/ScheduleCronRow.tsx
+++ b/resources/scripts/components/server/schedules/ScheduleCronRow.tsx
@@ -22,7 +22,7 @@ const ScheduleCronRow = ({ cron, className }: Props) => (
             <p css={tw`text-2xs text-neutral-500 uppercase`}>Day (Month)</p>
         </div>
         <div css={tw`w-1/5 sm:w-auto text-center ml-4`}>
-            <p css={tw`font-medium`}>*</p>
+            <p css={tw`font-medium`}>{cron.month}</p>
             <p css={tw`text-2xs text-neutral-500 uppercase`}>Month</p>
         </div>
         <div css={tw`w-1/5 sm:w-auto text-center ml-4`}>
diff --git a/resources/scripts/components/server/schedules/ScheduleEditContainer.tsx b/resources/scripts/components/server/schedules/ScheduleEditContainer.tsx
index 17d58ac4..8fcb91af 100644
--- a/resources/scripts/components/server/schedules/ScheduleEditContainer.tsx
+++ b/resources/scripts/components/server/schedules/ScheduleEditContainer.tsx
@@ -28,9 +28,9 @@ interface State {
 }
 
 const CronBox = ({ title, value }: { title: string; value: string }) => (
-    <div css={tw`bg-neutral-700 rounded p-4`}>
+    <div css={tw`bg-neutral-700 rounded p-3`}>
         <p css={tw`text-neutral-300 text-sm`}>{title}</p>
-        <p css={tw`text-2xl font-medium text-neutral-100`}>{value}</p>
+        <p css={tw`text-xl font-medium text-neutral-100`}>{value}</p>
     </div>
 );
 
@@ -88,13 +88,6 @@ export default () => {
                 :
                 <>
                     <ScheduleCronRow cron={schedule.cron} css={tw`sm:hidden bg-neutral-700 rounded mb-4 p-3`}/>
-                    <div css={tw`hidden sm:grid grid-cols-5 md:grid-cols-7 gap-4 mb-6`}>
-                        <CronBox title={'Minute'} value={schedule.cron.minute}/>
-                        <CronBox title={'Hour'} value={schedule.cron.hour}/>
-                        <CronBox title={'Day (Month)'} value={schedule.cron.dayOfMonth}/>
-                        <CronBox title={'Month'} value={'*'}/>
-                        <CronBox title={'Day (Week)'} value={schedule.cron.dayOfWeek}/>
-                    </div>
                     <div css={tw`rounded shadow`}>
                         <div css={tw`sm:flex items-center bg-neutral-900 p-3 sm:p-6 border-b-4 border-neutral-600 rounded-t`}>
                             <div css={tw`flex-1`}>
@@ -143,6 +136,13 @@ export default () => {
                                 </Can>
                             </div>
                         </div>
+                        <div css={tw`hidden sm:grid grid-cols-5 md:grid-cols-5 gap-4 mb-4 mt-4`}>
+                            <CronBox title={'Minute'} value={schedule.cron.minute}/>
+                            <CronBox title={'Hour'} value={schedule.cron.hour}/>
+                            <CronBox title={'Day (Month)'} value={schedule.cron.dayOfMonth}/>
+                            <CronBox title={'Month'} value={schedule.cron.month}/>
+                            <CronBox title={'Day (Week)'} value={schedule.cron.dayOfWeek}/>
+                        </div>
                         <div css={tw`bg-neutral-700 rounded-b`}>
                             {schedule.tasks.length > 0 ?
                                 schedule.tasks.map(task => (
diff --git a/resources/scripts/plugins/usePersistedState.ts b/resources/scripts/plugins/usePersistedState.ts
index f3198555..007e3fcd 100644
--- a/resources/scripts/plugins/usePersistedState.ts
+++ b/resources/scripts/plugins/usePersistedState.ts
@@ -1,6 +1,6 @@
 import { Dispatch, SetStateAction, useEffect, useState } from 'react';
 
-export function usePersistedState<S = undefined> (key: string, defaultValue: S): [S | undefined, Dispatch<SetStateAction<S | undefined>>] {
+export function usePersistedState<S = undefined> (key: string, defaultValue: S): [ S | undefined, Dispatch<SetStateAction<S | undefined>> ] {
     const [ state, setState ] = useState(
         () => {
             try {
@@ -12,7 +12,7 @@ export function usePersistedState<S = undefined> (key: string, defaultValue: S):
 
                 return defaultValue;
             }
-        }
+        },
     );
 
     useEffect(() => {
diff --git a/routes/api-client.php b/routes/api-client.php
index a00938f5..a82be715 100644
--- a/routes/api-client.php
+++ b/routes/api-client.php
@@ -3,6 +3,7 @@
 use Illuminate\Support\Facades\Route;
 use Pterodactyl\Http\Middleware\RequireTwoFactorAuthentication;
 use Pterodactyl\Http\Middleware\Api\Client\Server\SubuserBelongsToServer;
+use Pterodactyl\Http\Middleware\Api\Client\Server\ResourceBelongsToServer;
 use Pterodactyl\Http\Middleware\Api\Client\Server\AuthenticateServerAccess;
 use Pterodactyl\Http\Middleware\Api\Client\Server\AllocationBelongsToServer;
 
@@ -39,7 +40,7 @@ Route::group(['prefix' => '/account'], function () {
 | Endpoint: /api/client/servers/{server}
 |
 */
-Route::group(['prefix' => '/servers/{server}', 'middleware' => [AuthenticateServerAccess::class]], function () {
+Route::group(['prefix' => '/servers/{server}', 'middleware' => [AuthenticateServerAccess::class, ResourceBelongsToServer::class]], function () {
     Route::get('/', 'Servers\ServerController@index')->name('api:client:server.view');
     Route::get('/websocket', 'Servers\WebsocketController')->name('api:client:server.ws');
     Route::get('/resources', 'Servers\ResourceUtilizationController')->name('api:client:server.resources');
@@ -83,7 +84,7 @@ Route::group(['prefix' => '/servers/{server}', 'middleware' => [AuthenticateServ
         Route::delete('/{schedule}/tasks/{task}', 'Servers\ScheduleTaskController@delete');
     });
 
-    Route::group(['prefix' => '/network', 'middleware' => [AllocationBelongsToServer::class]], function () {
+    Route::group(['prefix' => '/network'], function () {
         Route::get('/allocations', 'Servers\NetworkAllocationController@index');
         Route::post('/allocations', 'Servers\NetworkAllocationController@store');
         Route::post('/allocations/{allocation}', 'Servers\NetworkAllocationController@update');
@@ -91,7 +92,7 @@ Route::group(['prefix' => '/servers/{server}', 'middleware' => [AuthenticateServ
         Route::delete('/allocations/{allocation}', 'Servers\NetworkAllocationController@delete');
     });
 
-    Route::group(['prefix' => '/users', 'middleware' => [SubuserBelongsToServer::class]], function () {
+    Route::group(['prefix' => '/users'], function () {
         Route::get('/', 'Servers\SubuserController@index');
         Route::post('/', 'Servers\SubuserController@store');
         Route::get('/{user}', 'Servers\SubuserController@view');
diff --git a/tests/Integration/Api/Client/ClientApiIntegrationTestCase.php b/tests/Integration/Api/Client/ClientApiIntegrationTestCase.php
index b7795905..85c261c2 100644
--- a/tests/Integration/Api/Client/ClientApiIntegrationTestCase.php
+++ b/tests/Integration/Api/Client/ClientApiIntegrationTestCase.php
@@ -10,11 +10,15 @@ use Pterodactyl\Models\Task;
 use Pterodactyl\Models\User;
 use Webmozart\Assert\Assert;
 use Pterodactyl\Models\Server;
+use Pterodactyl\Models\Backup;
 use Pterodactyl\Models\Subuser;
 use Pterodactyl\Models\Location;
 use Pterodactyl\Models\Schedule;
+use Pterodactyl\Models\Database;
 use Illuminate\Support\Collection;
 use Pterodactyl\Models\Allocation;
+use Pterodactyl\Models\DatabaseHost;
+use Pterodactyl\Tests\Integration\TestResponse;
 use Pterodactyl\Tests\Integration\IntegrationTestCase;
 use Pterodactyl\Transformers\Api\Client\BaseClientTransformer;
 
@@ -25,6 +29,9 @@ abstract class ClientApiIntegrationTestCase extends IntegrationTestCase
      */
     protected function tearDown(): void
     {
+        Database::query()->forceDelete();
+        DatabaseHost::query()->forceDelete();
+        Backup::query()->forceDelete();
         Server::query()->forceDelete();
         Node::query()->forceDelete();
         Location::query()->forceDelete();
@@ -44,6 +51,19 @@ abstract class ClientApiIntegrationTestCase extends IntegrationTestCase
         CarbonImmutable::setTestNow(Carbon::now());
     }
 
+    /**
+     * Override the default createTestResponse from Illuminate so that we can
+     * just dump 500-level errors to the screen in the tests without having
+     * to keep re-assigning variables.
+     *
+     * @param \Illuminate\Http\Response $response
+     * @return \Illuminate\Testing\TestResponse
+     */
+    protected function createTestResponse($response)
+    {
+        return TestResponse::fromBaseResponse($response);
+    }
+
     /**
      * Returns a link to the specific resource using the client API.
      *
diff --git a/tests/Integration/Api/Client/Server/Allocation/AllocationAuthorizationTest.php b/tests/Integration/Api/Client/Server/Allocation/AllocationAuthorizationTest.php
new file mode 100644
index 00000000..e46c4620
--- /dev/null
+++ b/tests/Integration/Api/Client/Server/Allocation/AllocationAuthorizationTest.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace Pterodactyl\Tests\Integration\Api\Client\Server\Allocation;
+
+use Pterodactyl\Models\Subuser;
+use Pterodactyl\Models\Schedule;
+use Pterodactyl\Models\Allocation;
+use Pterodactyl\Tests\Integration\Api\Client\ClientApiIntegrationTestCase;
+
+class AllocationAuthorizationTest extends ClientApiIntegrationTestCase
+{
+    /**
+     * @param string $method
+     * @param string $endpoint
+     * @dataProvider methodDataProvider
+     */
+    public function testAccessToAServersAllocationsIsRestrictedProperly(string $method, string $endpoint)
+    {
+        // The API $user is the owner of $server1.
+        [$user, $server1] = $this->generateTestAccount();
+        // Will be a subuser of $server2.
+        $server2 = $this->createServerModel();
+        // And as no access to $server3.
+        $server3 = $this->createServerModel();
+
+        // Set the API $user as a subuser of server 2, but with no permissions
+        // to do anything with the allocations for that server.
+        factory(Subuser::class)->create(['server_id' => $server2->id, 'user_id' => $user->id]);
+
+        $allocation1 = factory(Allocation::class)->create(['server_id' => $server1->id, 'node_id' => $server1->node_id]);
+        $allocation2 = factory(Allocation::class)->create(['server_id' => $server2->id, 'node_id' => $server2->node_id]);
+        $allocation3 = factory(Allocation::class)->create(['server_id' => $server3->id, 'node_id' => $server3->node_id]);
+
+        // This is the only valid call for this test, accessing the allocation for the same
+        // server that the API user is the owner of.
+        $response = $this->actingAs($user)->json($method, $this->link($server1, "/network/allocations/" . $allocation1->id . $endpoint));
+        $this->assertTrue($response->status() <= 204 || $response->status() === 400 || $response->status() === 422);
+
+        // This request fails because the allocation is valid for that server but the user
+        // making the request is not authorized to perform that action.
+        $this->actingAs($user)->json($method, $this->link($server2, "/network/allocations/" . $allocation2->id . $endpoint))->assertForbidden();
+
+        // Both of these should report a 404 error due to the allocations being linked to
+        // servers that are not the same as the server in the request, or are assigned
+        // to a server for which the user making the request has no access to.
+        $this->actingAs($user)->json($method, $this->link($server1, "/network/allocations/" . $allocation2->id . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server1, "/network/allocations/" . $allocation3->id . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server2, "/network/allocations/" . $allocation3->id . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server3, "/network/allocations/" . $allocation3->id . $endpoint))->assertNotFound();
+    }
+
+    /**
+     * @return \string[][]
+     */
+    public function methodDataProvider(): array
+    {
+        return [
+            ["POST", ""],
+            ["DELETE", ""],
+            ["POST", "/primary"],
+        ];
+    }
+}
diff --git a/tests/Integration/Api/Client/Server/Backup/BackupAuthorizationTest.php b/tests/Integration/Api/Client/Server/Backup/BackupAuthorizationTest.php
new file mode 100644
index 00000000..b680b534
--- /dev/null
+++ b/tests/Integration/Api/Client/Server/Backup/BackupAuthorizationTest.php
@@ -0,0 +1,71 @@
+<?php
+
+namespace Pterodactyl\Tests\Integration\Api\Client\Server\Backup;
+
+use Mockery;
+use Carbon\CarbonImmutable;
+use Pterodactyl\Models\Backup;
+use Pterodactyl\Models\Subuser;
+use Pterodactyl\Services\Backups\DeleteBackupService;
+use Pterodactyl\Tests\Integration\Api\Client\ClientApiIntegrationTestCase;
+
+class BackupAuthorizationTest extends ClientApiIntegrationTestCase
+{
+    /**
+     * @param string $method
+     * @param string $endpoint
+     * @dataProvider methodDataProvider
+     */
+    public function testAccessToAServersBackupIsRestrictedProperly(string $method, string $endpoint)
+    {
+        // The API $user is the owner of $server1.
+        [$user, $server1] = $this->generateTestAccount();
+        // Will be a subuser of $server2.
+        $server2 = $this->createServerModel();
+        // And as no access to $server3.
+        $server3 = $this->createServerModel();
+
+        // Set the API $user as a subuser of server 2, but with no permissions
+        // to do anything with the backups for that server.
+        factory(Subuser::class)->create(['server_id' => $server2->id, 'user_id' => $user->id]);
+
+        $backup1 = factory(Backup::class)->create(['server_id' => $server1->id, 'completed_at' => CarbonImmutable::now()]);
+        $backup2 = factory(Backup::class)->create(['server_id' => $server2->id, 'completed_at' => CarbonImmutable::now()]);
+        $backup3 = factory(Backup::class)->create(['server_id' => $server3->id, 'completed_at' => CarbonImmutable::now()]);
+
+        $this->instance(DeleteBackupService::class, $mock = Mockery::mock(DeleteBackupService::class));
+
+        if ($method === 'DELETE') {
+            $mock->expects('handle')->andReturnUndefined();
+        }
+
+        // This is the only valid call for this test, accessing the backup for the same
+        // server that the API user is the owner of.
+        $this->actingAs($user)->json($method, $this->link($server1, "/backups/" . $backup1->uuid . $endpoint))
+            ->assertStatus($method === 'DELETE' ? 204 : 200);
+
+        // This request fails because the backup is valid for that server but the user
+        // making the request is not authorized to perform that action.
+        $this->actingAs($user)->json($method, $this->link($server2, "/backups/" . $backup2->uuid . $endpoint))->assertForbidden();
+
+        // Both of these should report a 404 error due to the backup being linked to
+        // servers that are not the same as the server in the request, or are assigned
+        // to a server for which the user making the request has no access to.
+        $this->actingAs($user)->json($method, $this->link($server1, "/backups/" . $backup2->uuid . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server1, "/backups/" . $backup3->uuid . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server2, "/backups/" . $backup3->uuid . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server3, "/backups/" . $backup3->uuid . $endpoint))->assertNotFound();
+    }
+
+    /**
+     * @return \string[][]
+     */
+    public function methodDataProvider(): array
+    {
+        return [
+            ["GET", ""],
+            ["GET", "/download"],
+            ["DELETE", ""],
+        ];
+    }
+}
diff --git a/tests/Integration/Api/Client/Server/Database/DatabaseAuthorizationTest.php b/tests/Integration/Api/Client/Server/Database/DatabaseAuthorizationTest.php
new file mode 100644
index 00000000..aecd71db
--- /dev/null
+++ b/tests/Integration/Api/Client/Server/Database/DatabaseAuthorizationTest.php
@@ -0,0 +1,78 @@
+<?php
+
+namespace Pterodactyl\Tests\Integration\Api\Client\Server\Database;
+
+use Mockery;
+use Pterodactyl\Models\Subuser;
+use Pterodactyl\Models\Database;
+use Pterodactyl\Models\DatabaseHost;
+use Pterodactyl\Contracts\Extensions\HashidsInterface;
+use Pterodactyl\Services\Databases\DatabasePasswordService;
+use Pterodactyl\Services\Databases\DatabaseManagementService;
+use Pterodactyl\Tests\Integration\Api\Client\ClientApiIntegrationTestCase;
+
+class DatabaseAuthorizationTest extends ClientApiIntegrationTestCase
+{
+    /**
+     * @param string $method
+     * @param string $endpoint
+     * @dataProvider methodDataProvider
+     */
+    public function testAccessToAServersDatabasesIsRestrictedProperly(string $method, string $endpoint)
+    {
+        // The API $user is the owner of $server1.
+        [$user, $server1] = $this->generateTestAccount();
+        // Will be a subuser of $server2.
+        $server2 = $this->createServerModel();
+        // And as no access to $server3.
+        $server3 = $this->createServerModel();
+
+        $host = factory(DatabaseHost::class)->create([]);
+
+        // Set the API $user as a subuser of server 2, but with no permissions
+        // to do anything with the databases for that server.
+        factory(Subuser::class)->create(['server_id' => $server2->id, 'user_id' => $user->id]);
+
+        $database1 = factory(Database::class)->create(['server_id' => $server1->id, 'database_host_id' => $host->id]);
+        $database2 = factory(Database::class)->create(['server_id' => $server2->id, 'database_host_id' => $host->id]);
+        $database3 = factory(Database::class)->create(['server_id' => $server3->id, 'database_host_id' => $host->id]);
+
+        $this->instance(DatabasePasswordService::class, $mock = Mockery::mock(DatabasePasswordService::class));
+        $this->instance(DatabaseManagementService::class, $mock2 = Mockery::mock(DatabaseManagementService::class));
+
+        if ($method === 'POST') {
+            $mock->expects('handle')->andReturnUndefined();
+        } else {
+            $mock2->expects('delete')->andReturnUndefined();
+        }
+
+        $hashids = $this->app->make(HashidsInterface::class);
+        // This is the only valid call for this test, accessing the database for the same
+        // server that the API user is the owner of.
+        $this->actingAs($user)->json($method, $this->link($server1, "/databases/" . $hashids->encode($database1->id) . $endpoint))
+            ->assertStatus($method === 'DELETE' ? 204 : 200);
+
+        // This request fails because the database is valid for that server but the user
+        // making the request is not authorized to perform that action.
+        $this->actingAs($user)->json($method, $this->link($server2, "/databases/" . $hashids->encode($database2->id) . $endpoint))->assertForbidden();
+
+        // Both of these should report a 404 error due to the database being linked to
+        // servers that are not the same as the server in the request, or are assigned
+        // to a server for which the user making the request has no access to.
+        $this->actingAs($user)->json($method, $this->link($server1, "/databases/" . $hashids->encode($database2->id) . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server1, "/databases/" . $hashids->encode($database3->id) . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server2, "/databases/" . $hashids->encode($database3->id) . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server3, "/databases/" . $hashids->encode($database3->id) . $endpoint))->assertNotFound();
+    }
+
+    /**
+     * @return \string[][]
+     */
+    public function methodDataProvider(): array
+    {
+        return [
+            ["POST", "/rotate-password"],
+            ["DELETE", ""],
+        ];
+    }
+}
diff --git a/tests/Integration/Api/Client/Server/Schedule/CreateServerScheduleTest.php b/tests/Integration/Api/Client/Server/Schedule/CreateServerScheduleTest.php
index 51345fa7..6c6f9f85 100644
--- a/tests/Integration/Api/Client/Server/Schedule/CreateServerScheduleTest.php
+++ b/tests/Integration/Api/Client/Server/Schedule/CreateServerScheduleTest.php
@@ -25,6 +25,7 @@ class CreateServerScheduleTest extends ClientApiIntegrationTestCase
             'minute' => '0',
             'hour' => '*/2',
             'day_of_week' => '2',
+            'month' => '1',
             'day_of_month' => '*',
         ]);
 
@@ -39,6 +40,7 @@ class CreateServerScheduleTest extends ClientApiIntegrationTestCase
         $this->assertSame('0', $schedule->cron_minute);
         $this->assertSame('*/2', $schedule->cron_hour);
         $this->assertSame('2', $schedule->cron_day_of_week);
+        $this->assertSame('1', $schedule->cron_month);
         $this->assertSame('*', $schedule->cron_day_of_month);
         $this->assertSame('Test Schedule', $schedule->name);
 
@@ -69,6 +71,7 @@ class CreateServerScheduleTest extends ClientApiIntegrationTestCase
                 'minute' => '*',
                 'hour' => '*',
                 'day_of_month' => '*',
+                'month' => '*',
                 'day_of_week' => '*',
             ])
             ->assertStatus(Response::HTTP_UNPROCESSABLE_ENTITY)
diff --git a/tests/Integration/Api/Client/Server/Schedule/ScheduleAuthorizationTest.php b/tests/Integration/Api/Client/Server/Schedule/ScheduleAuthorizationTest.php
new file mode 100644
index 00000000..583fb4ae
--- /dev/null
+++ b/tests/Integration/Api/Client/Server/Schedule/ScheduleAuthorizationTest.php
@@ -0,0 +1,72 @@
+<?php
+
+namespace Pterodactyl\Tests\Integration\Api\Client\Server\Schedule;
+
+use Pterodactyl\Models\Subuser;
+use Pterodactyl\Models\Schedule;
+use Pterodactyl\Tests\Integration\Api\Client\ClientApiIntegrationTestCase;
+
+class ScheduleAuthorizationTest extends ClientApiIntegrationTestCase
+{
+    /**
+     * Tests that a subuser with access to two servers cannot improperly access a resource
+     * on Server A when providing a URL that points to Server B. This prevents a regression
+     * in the code where controllers didn't properly validate that a resource was assigned
+     * to the server that was also present in the URL.
+     *
+     * The comments within the test code itself are better at explaining exactly what is
+     * being tested and protected against.
+     *
+     * @param string $method
+     * @param string $endpoint
+     * @dataProvider methodDataProvider
+     */
+    public function testAccessToAServersSchedulesIsRestrictedProperly(string $method, string $endpoint)
+    {
+        // The API $user is the owner of $server1.
+        [$user, $server1] = $this->generateTestAccount();
+        // Will be a subuser of $server2.
+        $server2 = $this->createServerModel();
+        // And as no access to $server3.
+        $server3 = $this->createServerModel();
+
+        // Set the API $user as a subuser of server 2, but with no permissions
+        // to do anything with the schedules for that server.
+        factory(Subuser::class)->create(['server_id' => $server2->id, 'user_id' => $user->id]);
+
+        $schedule1 = factory(Schedule::class)->create(['server_id' => $server1->id]);
+        $schedule2 = factory(Schedule::class)->create(['server_id' => $server2->id]);
+        $schedule3 = factory(Schedule::class)->create(['server_id' => $server3->id]);
+
+        // This is the only valid call for this test, accessing the schedule for the same
+        // server that the API user is the owner of.
+        $response = $this->actingAs($user)->json($method, $this->link($server1, "/schedules/" . $schedule1->id . $endpoint));
+        $this->assertTrue($response->status() <= 204 || $response->status() === 400 || $response->status() === 422);
+
+        // This request fails because the schedule is valid for that server but the user
+        // making the request is not authorized to perform that action.
+        $this->actingAs($user)->json($method, $this->link($server2, "/schedules/" . $schedule2->id . $endpoint))->assertForbidden();
+
+        // Both of these should report a 404 error due to the schedules being linked to
+        // servers that are not the same as the server in the request, or are assigned
+        // to a server for which the user making the request has no access to.
+        $this->actingAs($user)->json($method, $this->link($server1, "/schedules/" . $schedule2->id . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server1, "/schedules/" . $schedule3->id . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server2, "/schedules/" . $schedule3->id . $endpoint))->assertNotFound();
+        $this->actingAs($user)->json($method, $this->link($server3, "/schedules/" . $schedule3->id . $endpoint))->assertNotFound();
+    }
+
+    /**
+     * @return \string[][]
+     */
+    public function methodDataProvider(): array
+    {
+        return [
+            ["GET", ""],
+            ["POST", ""],
+            ["DELETE", ""],
+            ["POST", "/execute"],
+            ["POST", "/tasks"],
+        ];
+    }
+}
diff --git a/tests/Integration/Api/Client/Server/Schedule/UpdateServerScheduleTest.php b/tests/Integration/Api/Client/Server/Schedule/UpdateServerScheduleTest.php
index ec60a413..979cd9e2 100644
--- a/tests/Integration/Api/Client/Server/Schedule/UpdateServerScheduleTest.php
+++ b/tests/Integration/Api/Client/Server/Schedule/UpdateServerScheduleTest.php
@@ -19,6 +19,7 @@ class UpdateServerScheduleTest extends ClientApiIntegrationTestCase
         'minute' => '5',
         'hour' => '*',
         'day_of_week' => '*',
+        'month' => '*',
         'day_of_month' => '*',
         'is_active' => false,
     ];
@@ -35,7 +36,7 @@ class UpdateServerScheduleTest extends ClientApiIntegrationTestCase
 
         /** @var \Pterodactyl\Models\Schedule $schedule */
         $schedule = factory(Schedule::class)->create(['server_id' => $server->id]);
-        $expected = Utilities::getScheduleNextRunDate('5', '*', '*', '*');
+        $expected = Utilities::getScheduleNextRunDate('5', '*', '*', '*', '*');
 
         $response = $this->actingAs($user)
             ->postJson("/api/client/servers/{$server->uuid}/schedules/{$schedule->id}", $this->updateData);
diff --git a/tests/Integration/Api/Client/Server/Subuser/SubuserAuthorizationTest.php b/tests/Integration/Api/Client/Server/Subuser/SubuserAuthorizationTest.php
new file mode 100644
index 00000000..f852ed06
--- /dev/null
+++ b/tests/Integration/Api/Client/Server/Subuser/SubuserAuthorizationTest.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Pterodactyl\Tests\Integration\Api\Client\Server\Subuser;
+
+use Mockery;
+use Pterodactyl\Models\User;
+use Pterodactyl\Models\Subuser;
+use Pterodactyl\Repositories\Wings\DaemonServerRepository;
+use Pterodactyl\Tests\Integration\Api\Client\ClientApiIntegrationTestCase;
+
+class SubuserAuthorizationTest extends ClientApiIntegrationTestCase
+{
+    /**
+     * Test that mismatched subusers are not accessible to a server.
+     *
+     * @param string $method
+     * @dataProvider methodDataProvider
+     */
+    public function testUserCannotAccessResourceBelongingToOtherServers(string $method)
+    {
+        // Generic subuser, the specific resource we're trying to access.
+        /** @var \Pterodactyl\Models\User $internal */
+        $internal = factory(User::class)->create();
+
+        // The API $user is the owner of $server1.
+        [$user, $server1] = $this->generateTestAccount();
+        // Will be a subuser of $server2.
+        $server2 = $this->createServerModel();
+        // And as no access to $server3.
+        $server3 = $this->createServerModel();
+
+        // Set the API $user as a subuser of server 2, but with no permissions
+        // to do anything with the subusers for that server.
+        factory(Subuser::class)->create(['server_id' => $server2->id, 'user_id' => $user->id]);
+
+        factory(Subuser::class)->create(['server_id' => $server1->id, 'user_id' => $internal->id]);
+        factory(Subuser::class)->create(['server_id' => $server2->id, 'user_id' => $internal->id]);
+        factory(Subuser::class)->create(['server_id' => $server3->id, 'user_id' => $internal->id]);
+
+        $this->instance(DaemonServerRepository::class, $mock = Mockery::mock(DaemonServerRepository::class));
+        if ($method === 'DELETE') {
+            $mock->expects('setServer->revokeUserJTI')->with($internal->id)->andReturnUndefined();
+        }
+
+        // This route is acceptable since they're accessing a subuser on their own server.
+        $this->actingAs($user)->json($method, $this->link($server1, "/users/" . $internal->uuid))->assertStatus($method === 'POST' ? 422 : ($method === 'DELETE' ? 204 : 200));
+
+        // This route can be revealed since the subuser belongs to the correct server, but
+        // errors out with a 403 since $user does not have the right permissions for this.
+        $this->actingAs($user)->json($method, $this->link($server2, "/users/" . $internal->uuid))->assertForbidden();
+        $this->actingAs($user)->json($method, $this->link($server3, "/users/" . $internal->uuid))->assertNotFound();
+    }
+
+    /**
+     * @return \string[][]
+     */
+    public function methodDataProvider(): array
+    {
+        return [["GET"], ["POST"], ["DELETE"]];
+    }
+}
diff --git a/tests/Integration/TestResponse.php b/tests/Integration/TestResponse.php
new file mode 100644
index 00000000..a812f37b
--- /dev/null
+++ b/tests/Integration/TestResponse.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Pterodactyl\Tests\Integration;
+
+use Illuminate\Testing\Assert as PHPUnit;
+use Pterodactyl\Exceptions\DisplayException;
+use Illuminate\Validation\ValidationException;
+use Illuminate\Testing\TestResponse as IlluminateTestResponse;
+
+class TestResponse extends IlluminateTestResponse
+{
+    /**
+     * Overrides the default assert status logic to dump out the error to the
+     * test output if it is caused by a 500 level error and we were not specifically
+     * look for that status response.
+     *
+     * @param int $status
+     * @return \Pterodactyl\Tests\Integration\TestResponse
+     */
+    public function assertStatus($status)
+    {
+        $actual = $this->getStatusCode();
+
+        // Dump the response to the screen before making the assertion which is going
+        // to fail so that debugging isn't such a nightmare.
+        if ($actual !== $status && $status !== 500) {
+            $this->dump();
+            if (! is_null($this->exception) && ! $this->exception instanceof DisplayException && ! $this->exception instanceof ValidationException) {
+                dump($this->exception);
+            }
+        }
+
+        PHPUnit::assertSame($actual, $status, "Expected status code {$status} but received {$actual}.");
+
+        return $this;
+    }
+}