diff --git a/app/Filament/GuestPanel/Resources/DvrRecordings/GuestDvrRecordingResource.php b/app/Filament/GuestPanel/Resources/DvrRecordings/GuestDvrRecordingResource.php
index f77dd32cd..01b5a8eb6 100644
--- a/app/Filament/GuestPanel/Resources/DvrRecordings/GuestDvrRecordingResource.php
+++ b/app/Filament/GuestPanel/Resources/DvrRecordings/GuestDvrRecordingResource.php
@@ -168,6 +168,19 @@ public static function getEloquentQuery(): Builder
 
         $currentAuth = static::getCurrentPlaylistAuth();
 
+        // Stale session: the credentials no longer resolve to a live
+        // PlaylistAuth row (e.g. revoked/disabled mid-session). Without this
+        // guard, Laravel's query builder turns `where(col, null)` into
+        // `whereNull(col)` and would happily return the playlist OWNER's
+        // recordings (the only ones with playlist_auth_id = null), re-opening
+        // the leak issue #1398 exists to close. isOwnerAuth() must be allowed
+        // through — the owner has no PlaylistAuth row, so getCurrentPlaylistAuth()
+        // legitimately returns null for them, and they own the recordings with
+        // playlist_auth_id = null.
+        if (! $currentAuth && ! static::isOwnerAuth()) {
+            return parent::getEloquentQuery()->whereRaw('1 = 0');
+        }
+
         return parent::getEloquentQuery()
             ->with(['channel', 'playlistAuth', 'dvrSetting.playlist', 'dvrSetting.customPlaylist', 'dvrSetting.mergedPlaylist'])
             ->where('dvr_setting_id', $dvrSetting->id)
diff --git a/app/Filament/GuestPanel/Resources/DvrRules/GuestDvrRuleResource.php b/app/Filament/GuestPanel/Resources/DvrRules/GuestDvrRuleResource.php
index 590750208..71096f93c 100644
--- a/app/Filament/GuestPanel/Resources/DvrRules/GuestDvrRuleResource.php
+++ b/app/Filament/GuestPanel/Resources/DvrRules/GuestDvrRuleResource.php
@@ -119,6 +119,19 @@ public static function getEloquentQuery(): Builder
 
         $currentAuth = static::getCurrentPlaylistAuth();
 
+        // Stale session: the credentials no longer resolve to a live
+        // PlaylistAuth row (e.g. revoked/disabled mid-session). Without this
+        // guard, Laravel's query builder turns `where(col, null)` into
+        // `whereNull(col)` and would happily return the playlist OWNER's
+        // rules (the only ones with playlist_auth_id = null), re-opening the
+        // leak issue #1398 exists to close. isOwnerAuth() must be allowed
+        // through — the owner has no PlaylistAuth row, so getCurrentPlaylistAuth()
+        // legitimately returns null for them, and they own the rules with
+        // playlist_auth_id = null.
+        if (! $currentAuth && ! static::isOwnerAuth()) {
+            return parent::getEloquentQuery()->whereRaw('1 = 0');
+        }
+
         return parent::getEloquentQuery()
             ->with(['channel', 'playlistAuth'])
             ->where('dvr_setting_id', $dvrSetting->id)
diff --git a/app/Filament/GuestPanel/Widgets/GuestScheduledSeriesWidget.php b/app/Filament/GuestPanel/Widgets/GuestScheduledSeriesWidget.php
index 980c3f932..42670b6d6 100644
--- a/app/Filament/GuestPanel/Widgets/GuestScheduledSeriesWidget.php
+++ b/app/Filament/GuestPanel/Widgets/GuestScheduledSeriesWidget.php
@@ -28,6 +28,19 @@ public function getSeriesRules(): Collection
 
         $currentAuth = static::getCurrentPlaylistAuth();
 
+        // Stale session: the credentials no longer resolve to a live
+        // PlaylistAuth row (e.g. revoked/disabled mid-session). Without this
+        // guard, Laravel's query builder turns `where(col, null)` into
+        // `whereNull(col)` and would happily return the playlist OWNER's
+        // series rules (the only ones with playlist_auth_id = null),
+        // re-opening the leak issue #1398 exists to close. isOwnerAuth() must
+        // be allowed through — the owner has no PlaylistAuth row, so
+        // getCurrentPlaylistAuth() legitimately returns null for them, and
+        // they own the rules with playlist_auth_id = null.
+        if (! $currentAuth && ! static::isOwnerAuth()) {
+            return new Collection;
+        }
+
         return DvrRecordingRule::with(['channel'])
             ->where('dvr_setting_id', $dvrSetting->id)
             ->where('type', DvrRuleType::Series)
diff --git a/tests/Feature/GuestDvrRecordingResourceTest.php b/tests/Feature/GuestDvrRecordingResourceTest.php
index db0e2914a..c8daf67f8 100644
--- a/tests/Feature/GuestDvrRecordingResourceTest.php
+++ b/tests/Feature/GuestDvrRecordingResourceTest.php
@@ -41,6 +41,25 @@ function setOwnerAuthRecordingContext(Playlist $playlist, User $user): void
     session()->put("{$prefix}guest_auth_password", $playlist->uuid);
 }
 
+/**
+ * Set up a "stale guest" session: the session still has credentials in the
+ * expected keys (so getCurrentAuth() returns non-null), but they don't match
+ * any PlaylistAuth row (so getCurrentPlaylistAuth() returns null). This is
+ * the state a guest lands in when their PlaylistAuth is revoked/disabled
+ * mid-session while stale session credentials still exist — the exact
+ * scenario issue #1398 follow-up is about. getDvrSetting() must still
+ * resolve normally via the request attribute so the only path that can leak
+ * is the playlist_auth_id whereNull() coercion of the original fix.
+ */
+function setStaleGuestRecordingContext(Playlist $playlist): void
+{
+    request()->attributes->set('playlist_uuid', $playlist->uuid);
+
+    $prefix = base64_encode($playlist->uuid).'_';
+    session()->put("{$prefix}guest_auth_username", 'nonexistent_guest');
+    session()->put("{$prefix}guest_auth_password", 'irrelevant_password');
+}
+
 beforeEach(function () {
     Queue::fake();
     config()->set('dvr.dvr_enabled', true);
@@ -454,3 +473,68 @@ function makeGuestPlayRecording(object $ctx, DvrRecordingStatus $status, ?int $a
 
     expect(GuestDvrRecordingResource::guestCanCancel($recording, null))->toBeFalse();
 });
+
+// --- Stale-guest null-auth fail-open (issue #1398 follow-up) ---
+//
+// When a guest's PlaylistAuth is revoked/disabled while they still hold a
+// session with credentials in the expected keys, getCurrentAuth() returns
+// non-null but getCurrentPlaylistAuth() returns null. The merged fix for
+// #1398 (scoping to playlist_auth_id) is correct for live guests, but the
+// `?->id` fallback to whereNull() was turning that null into "show every
+// recording with playlist_auth_id = null" — i.e. the playlist owner's. The
+// fix in getEloquentQuery() must fail closed in this state. isOwnerAuth()
+// must be allowed through, otherwise the legitimate playlist-owner login
+// (which has no PlaylistAuth row) regresses.
+
+it('returns no recordings when getCurrentPlaylistAuth() resolves to null and the session is not owner-auth', function () {
+    $ownerRecording = DvrRecording::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create(['playlist_auth_id' => null]);
+
+    DvrRecording::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create(['playlist_auth_id' => $this->guestA->id]);
+
+    setStaleGuestRecordingContext($this->playlist);
+
+    // Sanity check on the precondition — if these stop holding the test no
+    // longer exercises the bug it's meant to.
+    expect(GuestDvrRecordingResource::getDvrSetting())->not->toBeNull()
+        ->and(GuestDvrRecordingResource::getCurrentPlaylistAuth())->toBeNull();
+
+    $count = GuestDvrRecordingResource::getEloquentQuery()->count();
+
+    expect($count)->toBe(0);
+});
+
+it('returns no recordings when getCurrentPlaylistAuth() resolves to null even if the owner has recordings', function () {
+    // Specifically guard against leaking the owner's recording, which is the
+    // exact privacy regression #1398 exists to prevent.
+    DvrRecording::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create(['playlist_auth_id' => null]);
+
+    setStaleGuestRecordingContext($this->playlist);
+
+    $ids = GuestDvrRecordingResource::getEloquentQuery()->pluck('id')->all();
+
+    expect($ids)->toBe([]);
+});
+
+it('navigation badge is null when getCurrentPlaylistAuth() resolves to null', function () {
+    DvrRecording::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create(['playlist_auth_id' => null, 'status' => DvrRecordingStatus::Scheduled]);
+    DvrRecording::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create(['playlist_auth_id' => $this->guestA->id, 'status' => DvrRecordingStatus::Scheduled]);
+
+    setStaleGuestRecordingContext($this->playlist);
+
+    expect(GuestDvrRecordingResource::getNavigationBadge())->toBeNull();
+});
diff --git a/tests/Feature/GuestDvrRuleResourceTest.php b/tests/Feature/GuestDvrRuleResourceTest.php
index fa3ed194f..a9ac40688 100644
--- a/tests/Feature/GuestDvrRuleResourceTest.php
+++ b/tests/Feature/GuestDvrRuleResourceTest.php
@@ -40,6 +40,25 @@ function setOwnerAuthRuleContext(Playlist $playlist, User $user): void
     session()->put("{$prefix}guest_auth_password", $playlist->uuid);
 }
 
+/**
+ * Set up a "stale guest" session: credentials are present in the expected
+ * session keys (so getCurrentAuth() returns non-null), but they don't match
+ * any PlaylistAuth row (so getCurrentPlaylistAuth() returns null). This is
+ * the state a guest lands in when their PlaylistAuth is revoked/disabled
+ * mid-session while stale session credentials still exist — the exact
+ * scenario issue #1398 follow-up is about. getDvrSetting() must still
+ * resolve normally via the request attribute so the only path that can leak
+ * is the playlist_auth_id whereNull() coercion of the original fix.
+ */
+function setStaleGuestRuleContext(Playlist $playlist): void
+{
+    request()->attributes->set('playlist_uuid', $playlist->uuid);
+
+    $prefix = base64_encode($playlist->uuid).'_';
+    session()->put("{$prefix}guest_auth_username", 'nonexistent_guest');
+    session()->put("{$prefix}guest_auth_password", 'irrelevant_password');
+}
+
 beforeEach(function () {
     Queue::fake();
     config()->set('dvr.dvr_enabled', true);
@@ -364,3 +383,53 @@ function setOwnerAuthRuleContext(Playlist $playlist, User $user): void
     expect(GuestDvrRuleResource::canEdit($rule))->toBeFalse()
         ->and(GuestDvrRuleResource::canDelete($rule))->toBeFalse();
 });
+
+// --- Stale-guest null-auth fail-open (issue #1398 follow-up) ---
+//
+// When a guest's PlaylistAuth is revoked/disabled while they still hold a
+// session with credentials in the expected keys, getCurrentAuth() returns
+// non-null but getCurrentPlaylistAuth() returns null. The merged fix for
+// #1398 (scoping to playlist_auth_id) is correct for live guests, but the
+// `?->id` fallback to whereNull() was turning that null into "show every
+// rule with playlist_auth_id = null" — i.e. the playlist owner's. The fix
+// in getEloquentQuery() must fail closed in this state. isOwnerAuth() must
+// be allowed through, otherwise the legitimate playlist-owner login (which
+// has no PlaylistAuth row) regresses.
+
+it('returns no rules when getCurrentPlaylistAuth() resolves to null and the session is not owner-auth', function () {
+    $ownerRule = DvrRecordingRule::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create(['playlist_auth_id' => null]);
+
+    DvrRecordingRule::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create(['playlist_auth_id' => $this->guestA->id]);
+
+    setStaleGuestRuleContext($this->playlist);
+
+    // Sanity check on the precondition — if these stop holding the test no
+    // longer exercises the bug it's meant to.
+    expect(GuestDvrRuleResource::getDvrSetting())->not->toBeNull()
+        ->and(GuestDvrRuleResource::getCurrentPlaylistAuth())->toBeNull();
+
+    $count = GuestDvrRuleResource::getEloquentQuery()->count();
+
+    expect($count)->toBe(0);
+});
+
+it('returns no rules when getCurrentPlaylistAuth() resolves to null even if the owner has rules', function () {
+    // Specifically guard against leaking the owner's rules, which is the
+    // exact privacy regression #1398 exists to prevent.
+    DvrRecordingRule::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create(['playlist_auth_id' => null]);
+
+    setStaleGuestRuleContext($this->playlist);
+
+    $ids = GuestDvrRuleResource::getEloquentQuery()->pluck('id')->all();
+
+    expect($ids)->toBe([]);
+});
diff --git a/tests/Feature/GuestScheduledSeriesWidgetTest.php b/tests/Feature/GuestScheduledSeriesWidgetTest.php
index 84b1e1071..09e697e86 100644
--- a/tests/Feature/GuestScheduledSeriesWidgetTest.php
+++ b/tests/Feature/GuestScheduledSeriesWidgetTest.php
@@ -25,6 +25,25 @@ function setGuestScheduledSeriesContext(Playlist $playlist, PlaylistAuth $auth):
     session()->put("{$prefix}guest_auth_password", $auth->password);
 }
 
+/**
+ * Set up a "stale guest" session: credentials are present in the expected
+ * session keys (so getCurrentAuth() returns non-null), but they don't match
+ * any PlaylistAuth row (so getCurrentPlaylistAuth() returns null). This is
+ * the state a guest lands in when their PlaylistAuth is revoked/disabled
+ * mid-session while stale session credentials still exist — the exact
+ * scenario issue #1398 follow-up is about. getDvrSetting() must still
+ * resolve normally via the request attribute so the only path that can leak
+ * is the playlist_auth_id whereNull() coercion of the original fix.
+ */
+function setStaleGuestSeriesContext(Playlist $playlist): void
+{
+    request()->attributes->set('playlist_uuid', $playlist->uuid);
+
+    $prefix = base64_encode($playlist->uuid).'_';
+    session()->put("{$prefix}guest_auth_username", 'nonexistent_guest');
+    session()->put("{$prefix}guest_auth_password", 'irrelevant_password');
+}
+
 beforeEach(function () {
     config()->set('dvr.dvr_enabled', true);
     config()->set('proxy.proxy_integration_enabled', true);
@@ -93,3 +112,69 @@ function setGuestScheduledSeriesContext(Playlist $playlist, PlaylistAuth $auth):
 
     expect($ids)->toBe([$ownRule->id]);
 });
+
+// --- Stale-guest null-auth fail-open (issue #1398 follow-up) ---
+//
+// When a guest's PlaylistAuth is revoked/disabled while they still hold a
+// session with credentials in the expected keys, getCurrentAuth() returns
+// non-null but getCurrentPlaylistAuth() returns null. The merged fix for
+// #1398 (scoping to playlist_auth_id) is correct for live guests, but the
+// `?->id` fallback to whereNull() was turning that null into "show every
+// series rule with playlist_auth_id = null" — i.e. the playlist owner's.
+// The fix in getSeriesRules() must fail closed in this state. isOwnerAuth()
+// must be allowed through, otherwise the legitimate playlist-owner login
+// (which has no PlaylistAuth row) regresses.
+
+it('returns no series rules when getCurrentPlaylistAuth() resolves to null and the session is not owner-auth', function () {
+    $ownerRule = DvrRecordingRule::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create([
+            'type' => DvrRuleType::Series,
+            'series_title' => 'Owner Show',
+            'enabled' => true,
+            'playlist_auth_id' => null,
+        ]);
+
+    DvrRecordingRule::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create([
+            'type' => DvrRuleType::Series,
+            'series_title' => 'Other Guest Show',
+            'enabled' => true,
+            'playlist_auth_id' => $this->guestB->id,
+        ]);
+
+    setStaleGuestSeriesContext($this->playlist);
+
+    // Sanity check on the precondition — if these stop holding the test no
+    // longer exercises the bug it's meant to.
+    expect(GuestScheduledSeriesWidget::getDvrSetting())->not->toBeNull()
+        ->and(GuestScheduledSeriesWidget::getCurrentPlaylistAuth())->toBeNull();
+
+    $widget = new GuestScheduledSeriesWidget;
+
+    expect($widget->getSeriesRules())->toHaveCount(0);
+});
+
+it('returns no series rules when getCurrentPlaylistAuth() resolves to null even if the owner has series rules', function () {
+    // Specifically guard against leaking the owner's series rules, which is
+    // the exact privacy regression #1398 exists to prevent.
+    DvrRecordingRule::factory()
+        ->for($this->dvrSetting)
+        ->for($this->user)
+        ->create([
+            'type' => DvrRuleType::Series,
+            'series_title' => 'Owner Show',
+            'enabled' => true,
+            'playlist_auth_id' => null,
+        ]);
+
+    setStaleGuestSeriesContext($this->playlist);
+
+    $widget = new GuestScheduledSeriesWidget;
+    $ids = $widget->getSeriesRules()->pluck('id')->all();
+
+    expect($ids)->toBe([]);
+});