diff --git a/app/Livewire/Project/Shared/ScheduledTask/Executions.php b/app/Livewire/Project/Shared/ScheduledTask/Executions.php
index ca2bbd9b4..e95fd2f5a 100644
--- a/app/Livewire/Project/Shared/ScheduledTask/Executions.php
+++ b/app/Livewire/Project/Shared/ScheduledTask/Executions.php
@@ -10,6 +10,7 @@
 
 class Executions extends Component
 {
+    #[Locked]
     public ScheduledTask $task;
 
     #[Locked]
@@ -28,6 +29,7 @@ class Executions extends Component
 
     public $logsPerPage = 100;
 
+    #[Locked]
     public $selectedExecution = null;
 
     public $isPollingActive = false;
@@ -45,7 +47,7 @@ public function mount($taskId)
     {
         try {
             $this->taskId = $taskId;
-            $this->task = ScheduledTask::findOrFail($taskId);
+            $this->task = ScheduledTask::where('team_id', Auth::user()->currentTeam()->id)->findOrFail($taskId);
             $this->executions = $this->task->executions()->take(20)->get();
             $this->serverTimezone = data_get($this->task, 'application.destination.server.settings.server_timezone');
             if (! $this->serverTimezone) {
diff --git a/app/Livewire/Project/Shared/ScheduledTask/Show.php b/app/Livewire/Project/Shared/ScheduledTask/Show.php
index 882737f09..11df00153 100644
--- a/app/Livewire/Project/Shared/ScheduledTask/Show.php
+++ b/app/Livewire/Project/Shared/ScheduledTask/Show.php
@@ -15,8 +15,10 @@ class Show extends Component
 {
     use AuthorizesRequests;
 
+    #[Locked]
     public Application|Service $resource;
 
+    #[Locked]
     public ScheduledTask $task;
 
     #[Locked]
@@ -115,6 +117,7 @@ public function toggleEnabled()
     {
         try {
             $this->authorize('update', $this->resource);
+            $this->authorize('update', $this->task);
             $this->isEnabled = ! $this->isEnabled;
             $this->task->enabled = $this->isEnabled;
             $this->task->save();
@@ -128,6 +131,7 @@ public function instantSave()
     {
         try {
             $this->authorize('update', $this->resource);
+            $this->authorize('update', $this->task);
             $this->syncData(true);
             $this->dispatch('success', 'Scheduled task updated.');
             $this->refreshTasks();
@@ -140,6 +144,7 @@ public function submit()
     {
         try {
             $this->authorize('update', $this->resource);
+            $this->authorize('update', $this->task);
             $this->syncData(true);
             $this->dispatch('success', 'Scheduled task updated.');
         } catch (\Exception $e) {
@@ -160,6 +165,7 @@ public function delete()
     {
         try {
             $this->authorize('update', $this->resource);
+            $this->authorize('delete', $this->task);
             $this->task->delete();
 
             if ($this->type === 'application') {
@@ -176,6 +182,7 @@ public function executeNow()
     {
         try {
             $this->authorize('update', $this->resource);
+            $this->authorize('update', $this->task);
             ScheduledTaskJob::dispatch($this->task);
             $this->dispatch('success', 'Scheduled task executed.');
         } catch (\Exception $e) {
diff --git a/app/Policies/ScheduledTaskPolicy.php b/app/Policies/ScheduledTaskPolicy.php
new file mode 100644
index 000000000..fac7e7b22
--- /dev/null
+++ b/app/Policies/ScheduledTaskPolicy.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace App\Policies;
+
+use App\Models\ScheduledTask;
+use App\Models\User;
+use Illuminate\Auth\Access\Response;
+
+class ScheduledTaskPolicy
+{
+    /**
+     * Determine whether the user can view any models.
+     */
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can view the model.
+     */
+    public function view(User $user, ScheduledTask $scheduledTask): bool
+    {
+        return $user->teams->contains('id', $scheduledTask->team_id);
+    }
+
+    /**
+     * Determine whether the user can create models.
+     */
+    public function create(User $user): bool
+    {
+        return $user->isAdmin();
+    }
+
+    /**
+     * Determine whether the user can update the model.
+     */
+    public function update(User $user, ScheduledTask $scheduledTask): Response
+    {
+        if (! $user->isAdminOfTeam($scheduledTask->team_id)) {
+            return Response::deny('You need at least admin or owner permissions to update this scheduled task.');
+        }
+
+        return Response::allow();
+    }
+
+    /**
+     * Determine whether the user can delete the model.
+     */
+    public function delete(User $user, ScheduledTask $scheduledTask): bool
+    {
+        return $user->isAdminOfTeam($scheduledTask->team_id);
+    }
+
+    /**
+     * Determine whether the user can restore the model.
+     */
+    public function restore(User $user, ScheduledTask $scheduledTask): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can permanently delete the model.
+     */
+    public function forceDelete(User $user, ScheduledTask $scheduledTask): bool
+    {
+        return false;
+    }
+}
diff --git a/app/Providers/AuthServiceProvider.php b/app/Providers/AuthServiceProvider.php
index 0adf9e232..09b2a3e08 100644
--- a/app/Providers/AuthServiceProvider.php
+++ b/app/Providers/AuthServiceProvider.php
@@ -19,6 +19,7 @@
 use App\Models\Project;
 use App\Models\PushoverNotificationSettings;
 use App\Models\S3Storage;
+use App\Models\ScheduledTask;
 use App\Models\Server;
 use App\Models\Service;
 use App\Models\ServiceApplication;
@@ -56,6 +57,7 @@
 use App\Policies\ProjectPolicy;
 use App\Policies\ResourceCreatePolicy;
 use App\Policies\S3StoragePolicy;
+use App\Policies\ScheduledTaskPolicy;
 use App\Policies\ServerPolicy;
 use App\Policies\ServiceApplicationPolicy;
 use App\Policies\ServiceDatabasePolicy;
@@ -118,6 +120,9 @@ class AuthServiceProvider extends ServiceProvider
         // S3 storage policy
         S3Storage::class => S3StoragePolicy::class,
 
+        // Scheduled task policy
+        ScheduledTask::class => ScheduledTaskPolicy::class,
+
         // Team policy
         Team::class => TeamPolicy::class,
 
diff --git a/tests/Feature/ScheduledTaskCrossTeamIdorTest.php b/tests/Feature/ScheduledTaskCrossTeamIdorTest.php
new file mode 100644
index 000000000..b250db119
--- /dev/null
+++ b/tests/Feature/ScheduledTaskCrossTeamIdorTest.php
@@ -0,0 +1,125 @@
+<?php
+
+use App\Livewire\Project\Shared\ScheduledTask\Executions;
+use App\Livewire\Project\Shared\ScheduledTask\Show;
+use App\Models\Application;
+use App\Models\Environment;
+use App\Models\InstanceSettings;
+use App\Models\Project;
+use App\Models\ScheduledTask;
+use App\Models\Server;
+use App\Models\StandaloneDocker;
+use App\Models\Team;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Gate;
+use Livewire\Attributes\Locked;
+use Livewire\Livewire;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function () {
+    $this->withoutVite();
+    InstanceSettings::forceCreate(['id' => 0]);
+
+    $this->attacker = User::factory()->create();
+    $this->attackerTeam = Team::factory()->create();
+    $this->attacker->teams()->attach($this->attackerTeam, ['role' => 'owner']);
+
+    $this->victim = User::factory()->create();
+    $this->victimTeam = Team::factory()->create();
+    $this->victim->teams()->attach($this->victimTeam, ['role' => 'owner']);
+
+    // Attacker team gets a real server/project/env/app so Show can mount + authorize
+    $this->server = Server::factory()->create(['team_id' => $this->attackerTeam->id]);
+    $this->destination = StandaloneDocker::where('server_id', $this->server->id)->first();
+    $this->project = Project::factory()->create(['team_id' => $this->attackerTeam->id]);
+    $this->environment = Environment::factory()->create(['project_id' => $this->project->id]);
+    $this->application = Application::factory()->create([
+        'environment_id' => $this->environment->id,
+        'destination_id' => $this->destination->id,
+        'destination_type' => $this->destination->getMorphClass(),
+    ]);
+
+    $this->actingAs($this->attacker);
+    session(['currentTeam' => $this->attackerTeam]);
+});
+
+describe('ScheduledTask locked properties', function () {
+    test('Show component task property has Locked attribute', function () {
+        $property = new ReflectionProperty(Show::class, 'task');
+        $attributes = $property->getAttributes(Locked::class);
+
+        expect($attributes)->not->toBeEmpty();
+    });
+
+    test('Show component resource property has Locked attribute', function () {
+        $property = new ReflectionProperty(Show::class, 'resource');
+        $attributes = $property->getAttributes(Locked::class);
+
+        expect($attributes)->not->toBeEmpty();
+    });
+
+    test('Executions component task property has Locked attribute', function () {
+        $property = new ReflectionProperty(Executions::class, 'task');
+        $attributes = $property->getAttributes(Locked::class);
+
+        expect($attributes)->not->toBeEmpty();
+    });
+
+    test('Executions component selected execution property has Locked attribute', function () {
+        $property = new ReflectionProperty(Executions::class, 'selectedExecution');
+        $attributes = $property->getAttributes(Locked::class);
+
+        expect($attributes)->not->toBeEmpty();
+    });
+});
+
+describe('ScheduledTask cross-team access', function () {
+    test('Executions rejects mounting another team task id', function () {
+        $victimTask = ScheduledTask::factory()->create([
+            'team_id' => $this->victimTeam->id,
+            'command' => 'echo top-secret-victim-command',
+        ]);
+
+        Livewire::test(Executions::class, ['taskId' => $victimTask->id])
+            ->assertStatus(404);
+    });
+
+    test('Show policy denies updating another team task', function () {
+        $victimTask = ScheduledTask::factory()->create([
+            'team_id' => $this->victimTeam->id,
+            'name' => 'victim-task',
+            'command' => 'echo original-victim-command',
+        ]);
+
+        expect(
+            Gate::forUser($this->attacker)->allows('update', $victimTask)
+        )->toBeFalse();
+    });
+
+    test('Show policy denies deleting another team task', function () {
+        $victimTask = ScheduledTask::factory()->create([
+            'team_id' => $this->victimTeam->id,
+            'name' => 'victim-task',
+            'command' => 'echo original-victim-command',
+        ]);
+
+        expect(
+            Gate::forUser($this->attacker)->allows('delete', $victimTask)
+        )->toBeFalse();
+    });
+
+    test('Show policy allows updating own team task', function () {
+        $ownTask = ScheduledTask::factory()->create([
+            'team_id' => $this->attackerTeam->id,
+            'application_id' => $this->application->id,
+            'name' => 'own-task',
+            'command' => 'echo original-command',
+        ]);
+
+        expect(
+            Gate::forUser($this->attacker)->allows('update', $ownTask)
+        )->toBeTrue();
+    });
+});