🔒️(backend) add application validation when consuming external JWT

Token generation already verifies that the application is active, but this
guarantee was not enforced when the token was used. This change adds a
runtime check to ensure the client_id claim matches an existing and active
application when evaluating permissions.

This also introduces an emergency revocation mechanism, allowing all previously
issued tokens for a given application to be invalidated if the application is
disabled.

CHANGELOG.md

@@ -10,10 +10,17 @@ and this project adheres to
 
 ### Changed
 
+- ♿️(frontend) improve spinner reduced‑motion fallback #931
 - ♿️(frontend) fix form labels and autocomplete wiring #932
 - 🥅(summary) catch file-related exceptions when handling recording #944
 - 📝(frontend) update legal terms #956
 - ⚡️(backend) enhance django admin's loading performance #954
+- 🌐(frontend) add missing DE translation for accessibility settings
+
+### Fixed
+
+- 🔐(backend) enforce object-level permission checks on room endpoint #959
+- 🔒️(backend) add application validation when consuming external JWT #963
 
 ## [1.5.0] - 2026-01-28
 

src/backend/core/external_api/authentication.py

@@ -10,6 +10,8 @@ import jwt as pyJwt
 from lasuite.oidc_resource_server.backend import ResourceServerBackend as LaSuiteBackend
 from rest_framework import authentication, exceptions
 
+from core.models import Application
+
 User = get_user_model()
 logger = logging.getLogger(__name__)
 
@@ -94,6 +96,18 @@ class ApplicationJWTAuthentication(authentication.BaseAuthentication):
             logger.warning("Missing 'client_id' in JWT payload")
             raise exceptions.AuthenticationFailed("Invalid token claims.")
 
+        try:
+            application = Application.objects.get(client_id=client_id)
+        except Application.DoesNotExist as e:
+            logger.warning("Application not found: %s", client_id)
+            raise exceptions.AuthenticationFailed("Application not found.") from e
+
+        if not application.active:
+            logger.warning(
+                "Inactive application attempted authentication: %s", client_id
+            )
+            raise exceptions.AuthenticationFailed("Application is disabled.")
+
         if not is_delegated:
             logger.warning("Token is not marked as delegated")
             raise exceptions.AuthenticationFailed("Invalid token type.")

src/backend/core/external_api/permissions.py

@@ -33,12 +33,11 @@ class BaseScopePermission(permissions.BasePermission):
         Raises:
             PermissionDenied: If required scope is missing from token
         """
-        # Get the current action (e.g., 'list', 'create')
+        # Get the current action (e.g., 'list', 'create'), if None let DRF handle it
         action = getattr(view, "action", None)
         if not action:
-            raise exceptions.PermissionDenied(
-                "Insufficient permissions. Unknown action."
-            )
+            # DRF routers return a 405 for unsupported methods
+            return True
 
         required_scope = self.scope_map.get(action)
         if not required_scope:
@@ -57,9 +56,12 @@ class BaseScopePermission(permissions.BasePermission):
         if isinstance(token_scopes, str):
             token_scopes = token_scopes.split()
 
+        # Ensure scopes is a deduplicated list (preserving order) and lowercase all scopes
+        token_scopes = list(dict.fromkeys(scope.lower() for scope in token_scopes))
+
         if settings.OIDC_RS_SCOPES_PREFIX:
             token_scopes = [
-                scope.replace(f"{settings.OIDC_RS_SCOPES_PREFIX}:", "")
+                scope.removeprefix(f"{settings.OIDC_RS_SCOPES_PREFIX}:")
                 for scope in token_scopes
             ]
 
@@ -82,3 +84,23 @@ class HasRequiredRoomScope(BaseScopePermission):
         "partial_update": models.ApplicationScope.ROOMS_UPDATE,
         "destroy": models.ApplicationScope.ROOMS_DELETE,
     }
+
+
+class RoomPermissions(permissions.BasePermission):
+    """Permissions applying to the room API endpoint."""
+
+    def has_permission(self, request, view):
+        """Allow access only to authenticated users."""
+        return request.user.is_authenticated
+
+    def has_object_permission(self, request, view, obj):
+        """Enforce role-based access: read=any role, delete=owner, write=admin or owner."""
+        user = request.user
+
+        if request.method in permissions.SAFE_METHODS:
+            return obj.has_any_role(user)
+
+        if request.method == "DELETE":
+            return obj.is_owner(user)
+
+        return obj.is_administrator_or_owner(user)

src/backend/core/external_api/viewsets.py

@@ -182,7 +182,9 @@ class RoomViewSet(
         ResourceServerAuthentication,
     ]
     permission_classes = [
-        api.permissions.IsAuthenticated & permissions.HasRequiredRoomScope
+        api.permissions.IsAuthenticated
+        & permissions.HasRequiredRoomScope
+        & permissions.RoomPermissions
     ]
     queryset = models.Room.objects.all()
     serializer_class = serializers.RoomSerializer

src/backend/core/models.py

@@ -292,6 +292,10 @@ class Resource(BaseModel):
                 role = RoleChoices.MEMBER
         return role
 
+    def has_any_role(self, user):
+        """Check if a user has any role on the resource."""
+        return self.get_role(user) is not None
+
     def is_administrator_or_owner(self, user):
         """
         Check if a user is administrator or owner of the resource."""

src/backend/core/tests/recording/event/test_notification.py

@@ -102,6 +102,7 @@ def test_notify_user_by_email_success(mocked_current_site, settings):
     settings.EMAIL_SUPPORT_EMAIL = "support@acme.com"
     settings.EMAIL_LOGO_IMG = "https://acme.com/logo"
     settings.SCREEN_RECORDING_BASE_URL = "https://acme.com/recordings"
+    settings.RECORDING_DOWNLOAD_BASE_URL = None
     settings.EMAIL_FROM = "notifications@acme.com"
 
     recording = factories.RecordingFactory(room__name="Conference Room A")

src/backend/core/tests/test_external_api_rooms.py

@@ -2,21 +2,21 @@
 Tests for external API /room endpoint
 """
 
-# pylint: disable=W0621
+# pylint: disable=W0621,C0302
 
+import uuid
 from datetime import datetime, timedelta, timezone
+from unittest import mock
 
 from django.conf import settings
 
 import jwt
 import pytest
 import responses
+from lasuite.oidc_resource_server.authentication import ResourceServerAuthentication
 from rest_framework.test import APIClient
 
-from core.factories import (
-    RoomFactory,
-    UserFactory,
-)
+from core.factories import ApplicationFactory, RoomFactory, UserFactory
 from core.models import ApplicationScope, RoleChoices, Room, RoomAccessLevel, User
 
 pytestmark = pytest.mark.django_db
@@ -27,12 +27,14 @@ def generate_test_token(user, scopes):
     now = datetime.now(timezone.utc)
     scope_string = " ".join(scopes)
 
+    application = ApplicationFactory()
+
     payload = {
         "iss": settings.APPLICATION_JWT_ISSUER,
         "aud": settings.APPLICATION_JWT_AUDIENCE,
         "iat": now,
         "exp": now + timedelta(seconds=settings.APPLICATION_JWT_EXPIRATION_SECONDS),
-        "client_id": "test-client-id",
+        "client_id": str(application.client_id),
         "scope": scope_string,
         "user_id": str(user.id),
         "delegated": True,
@@ -53,6 +55,23 @@ def test_api_rooms_list_requires_authentication():
     assert response.status_code == 401
 
 
+def test_api_rooms_list_inactive_user(settings):
+    """List should return 401 if user is inactive."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user1 = UserFactory(is_active=False)
+    RoomFactory(users=[(user1, RoleChoices.OWNER)])
+
+    token = generate_test_token(user1, [ApplicationScope.ROOMS_LIST])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 401
+    assert "user account is disabled" in str(response.data).lower()
+
+
 def test_api_rooms_list_with_valid_token(settings):
     """Listing rooms with valid token should succeed."""
 
@@ -73,6 +92,24 @@ def test_api_rooms_list_with_valid_token(settings):
     assert response.data["results"][0]["id"] == str(room.id)
 
 
+def test_api_rooms_list_with_no_rooms(settings):
+    """Listing rooms with a valid token returns an empty list when there are no rooms."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user = UserFactory()
+
+    # Generate valid token
+    token = generate_test_token(user, [ApplicationScope.ROOMS_LIST])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 200
+    assert response.data["count"] == 0
+    assert response.data["results"] == []
+
+
 def test_api_rooms_list_with_expired_token(settings):
     """Listing rooms with expired token should return 401."""
     settings.APPLICATION_JWT_SECRET_KEY = "devKey"
@@ -92,8 +129,8 @@ def test_api_rooms_list_with_expired_token(settings):
 
 
 @responses.activate
-def test_api_rooms_list_with_invalid_token(settings):
-    """Listing rooms with invalid token should return 400."""
+def test_api_rooms_list_with_invalid_rs_token(settings):
+    """Listing rooms with invalid resource server token should return 400."""
 
     settings.OIDC_OP_INTROSPECTION_ENDPOINT = "https://oidc.example.com/introspect"
     settings.OIDC_OP_URL = "https://oidc.example.com"
@@ -130,7 +167,27 @@ def test_api_rooms_list_missing_scope(settings):
     response = client.get("/external-api/v1.0/rooms/")
 
     assert response.status_code == 403
-    assert "Insufficient permissions. Required scope: rooms:list" in str(response.data)
+    assert (
+        "insufficient permissions. required scope: rooms:list"
+        in str(response.data).lower()
+    )
+
+
+def test_api_rooms_list_no_scope(settings):
+    """Listing rooms without any scope should return 403."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user = UserFactory()
+
+    # Token without scope
+    token = generate_test_token(user, [])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 403
+    assert "insufficient permissions." in str(response.data).lower()
 
 
 def test_api_rooms_list_filters_by_user(settings):
@@ -144,7 +201,9 @@ def test_api_rooms_list_filters_by_user(settings):
     room2 = RoomFactory(users=[(user2, RoleChoices.OWNER)])
     room3 = RoomFactory(users=[(user1, RoleChoices.MEMBER)])
 
-    token = generate_test_token(user1, [ApplicationScope.ROOMS_LIST])
+    token = generate_test_token(
+        user1, [ApplicationScope.ROOMS_LIST, ApplicationScope.ROOMS_CREATE]
+    )
 
     client = APIClient()
     client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
@@ -158,6 +217,84 @@ def test_api_rooms_list_filters_by_user(settings):
     assert str(room2.id) not in returned_ids
 
 
+def test_api_rooms_retrieve_requires_authentication(settings):
+    """Retrieving rooms without authentication should return 401."""
+
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user1 = UserFactory()
+    room1 = RoomFactory(users=[(user1, RoleChoices.OWNER)])
+
+    client = APIClient()
+    response = client.get(f"/external-api/v1.0/rooms/{room1.id}/")
+
+    assert response.status_code == 401
+
+
+def test_api_rooms_retrieve_inactive_user(settings):
+    """Retrieve should return 401 if user is inactive."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user1 = UserFactory(is_active=False)
+    room1 = RoomFactory(users=[(user1, RoleChoices.OWNER)])
+
+    token = generate_test_token(user1, [ApplicationScope.ROOMS_LIST])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get(f"/external-api/v1.0/rooms/{room1.id}/")
+
+    assert response.status_code == 401
+    assert "user account is disabled" in str(response.data).lower()
+
+
+def test_api_rooms_retrieve_with_expired_token(settings):
+    """Retrieving rooms with expired token should return 401."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+    settings.APPLICATION_JWT_EXPIRATION_SECONDS = 0
+
+    user = UserFactory()
+    room = RoomFactory(users=[(user, RoleChoices.OWNER)])
+
+    # Generate expired token
+    token = generate_test_token(user, [ApplicationScope.ROOMS_CREATE])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get(f"/external-api/v1.0/rooms/{room.id}/")
+
+    assert response.status_code == 401
+    assert "expired" in str(response.data).lower()
+
+
+@responses.activate
+def test_api_rooms_retrieve_with_invalid_rs_token(settings):
+    """Retrieving rooms with invalid resource server token should return 400."""
+
+    settings.OIDC_OP_INTROSPECTION_ENDPOINT = "https://oidc.example.com/introspect"
+    settings.OIDC_OP_URL = "https://oidc.example.com"
+
+    responses.add(
+        responses.POST,
+        "https://oidc.example.com/introspect",
+        json={
+            "iss": "https://oidc.example.com",
+            "active": False,
+        },
+    )
+
+    user = UserFactory()
+    room = RoomFactory(users=[(user, RoleChoices.OWNER)])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION="Bearer invalid-token-123")
+    response = client.get(f"/external-api/v1.0/rooms/{room.id}/")
+
+    # Return 400 instead of 401 because ResourceServerAuthentication raises
+    # SuspiciousOperation when the introspected user is not active
+    assert response.status_code == 400
+
+
 def test_api_rooms_retrieve_requires_scope(settings):
     """Retrieving a room requires ROOMS_RETRIEVE scope."""
     settings.APPLICATION_JWT_SECRET_KEY = "devKey"
@@ -178,6 +315,24 @@ def test_api_rooms_retrieve_requires_scope(settings):
     )
 
 
+def test_api_rooms_retrieve_no_scope(settings):
+    """Retrieving rooms without any scope should return 403."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user = UserFactory()
+
+    # Token without scope
+    token = generate_test_token(user, [])
+    room = RoomFactory(users=[(user, RoleChoices.OWNER)])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get(f"/external-api/v1.0/rooms/{room.id}/")
+
+    assert response.status_code == 403
+    assert "insufficient permissions." in str(response.data).lower()
+
+
 def test_api_rooms_retrieve_success(settings):
     """Retrieving a room with correct scope should succeed."""
     settings.APPLICATION_JWT_SECRET_KEY = "devKey"
@@ -212,6 +367,132 @@ def test_api_rooms_retrieve_success(settings):
     }
 
 
+def test_api_rooms_retrieve_success_by_user(settings):
+    """Retrieve should only return rooms accessible to the authenticated user."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user1 = UserFactory()
+    user2 = UserFactory()
+
+    room1 = RoomFactory(users=[(user1, RoleChoices.OWNER)])
+    room2 = RoomFactory(users=[(user2, RoleChoices.OWNER)])
+    room3 = RoomFactory(users=[(user1, RoleChoices.MEMBER)])
+    room4 = RoomFactory(users=[(user1, RoleChoices.ADMIN)])
+
+    token = generate_test_token(
+        user1, [ApplicationScope.ROOMS_RETRIEVE, ApplicationScope.ROOMS_LIST]
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get(f"/external-api/v1.0/rooms/{room2.id}/")
+
+    assert response.status_code == 403
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get(f"/external-api/v1.0/rooms/{room1.id}/")
+
+    assert response.status_code == 200
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get(f"/external-api/v1.0/rooms/{room3.id}/")
+
+    assert response.status_code == 200
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get(f"/external-api/v1.0/rooms/{room4.id}/")
+
+    assert response.status_code == 200
+
+
+def test_api_rooms_retrieve_not_found(settings):
+    """Retrieving a non-existing room with correct scope should return a 404."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user = UserFactory()
+    token = generate_test_token(user, [ApplicationScope.ROOMS_RETRIEVE])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get(f"/external-api/v1.0/rooms/{uuid.uuid4()}/")
+
+    assert response.status_code == 404
+    assert "no room matches the given query." in str(response.data).lower()
+
+
+def test_api_rooms_create_requires_authentication(settings):
+    """Creating rooms without authentication should return 401."""
+
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    client = APIClient()
+    response = client.post("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 401
+
+
+def test_api_rooms_create_with_expired_token(settings):
+    """Creating rooms with expired token should return 401."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+    settings.APPLICATION_JWT_EXPIRATION_SECONDS = 0
+
+    user = UserFactory()
+
+    # Generate expired token
+    token = generate_test_token(user, [ApplicationScope.ROOMS_CREATE])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.post("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 401
+    assert "expired" in str(response.data).lower()
+
+
+@responses.activate
+def test_api_rooms_create_with_invalid_rs_token(settings):
+    """Creating rooms with invalid resource server token should return 400."""
+
+    settings.OIDC_OP_INTROSPECTION_ENDPOINT = "https://oidc.example.com/introspect"
+    settings.OIDC_OP_URL = "https://oidc.example.com"
+
+    responses.add(
+        responses.POST,
+        "https://oidc.example.com/introspect",
+        json={
+            "iss": "https://oidc.example.com",
+            "active": False,
+        },
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION="Bearer invalid-token-123")
+    response = client.post("/external-api/v1.0/rooms/")
+
+    # Return 400 instead of 401 because ResourceServerAuthentication raises
+    # SuspiciousOperation when the introspected user is not active
+    assert response.status_code == 400
+
+
+def test_api_rooms_create_inactive_user(settings):
+    """Create should return 401 if user is inactive."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user1 = UserFactory(is_active=False)
+
+    token = generate_test_token(user1, [ApplicationScope.ROOMS_CREATE])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.post("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 401
+    assert "user account is disabled" in str(response.data).lower()
+
+
 def test_api_rooms_create_requires_scope(settings):
     """Creating a room requires ROOMS_CREATE scope."""
     settings.APPLICATION_JWT_SECRET_KEY = "devKey"
@@ -225,18 +506,38 @@ def test_api_rooms_create_requires_scope(settings):
     response = client.post("/external-api/v1.0/rooms/", {}, format="json")
 
     assert response.status_code == 403
-    assert "Insufficient permissions. Required scope: rooms:create" in str(
-        response.data
+    assert (
+        "insufficient permissions. required scope: rooms:create"
+        in str(response.data).lower()
     )
 
 
+def test_api_rooms_create_no_scope(settings):
+    """Creating rooms without any scope should return 403."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user = UserFactory()
+
+    # Token without scope
+    token = generate_test_token(user, [])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.post("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 403
+    assert "insufficient permissions." in str(response.data).lower()
+
+
 def test_api_rooms_create_success(settings):
     """Creating a room with correct scope should succeed."""
     settings.APPLICATION_JWT_SECRET_KEY = "devKey"
 
     user = UserFactory()
 
-    token = generate_test_token(user, [ApplicationScope.ROOMS_CREATE])
+    token = generate_test_token(
+        user, [ApplicationScope.ROOMS_CREATE, ApplicationScope.ROOMS_LIST]
+    )
 
     client = APIClient()
     client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
@@ -245,6 +546,8 @@ def test_api_rooms_create_success(settings):
     assert response.status_code == 201
     assert "id" in response.data
     assert "slug" in response.data
+    assert "name" in response.data
+    assert response.data["name"] == response.data["slug"]
 
     # Verify room was created with user as owner
     room = Room.objects.get(id=response.data["id"])
@@ -252,6 +555,72 @@ def test_api_rooms_create_success(settings):
     assert room.access_level == "trusted"
 
 
+def test_api_rooms_create_readonly_enforcement(settings):
+    """Creating a room succeeds and any provided read-only fields are ignored."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user = UserFactory()
+
+    token = generate_test_token(user, [ApplicationScope.ROOMS_CREATE])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.post(
+        "/external-api/v1.0/rooms/",
+        {
+            "id": "fake-id",
+            "slug": "fake-slug",
+            "name": "fake-name",
+            "access_level": "public",
+        },
+        format="json",
+    )
+
+    assert response.status_code == 201
+    assert "slug" in response.data
+    assert response.data["id"] != "fake-id"
+    assert "name" in response.data
+    assert response.data["slug"] != "fake-slug"
+    assert "id" in response.data
+    assert response.data["name"] != "fake-name"
+
+    # Verify room was created with user as owner
+    room = Room.objects.get(id=response.data["id"])
+    assert room.get_role(user) == RoleChoices.OWNER
+    assert room.access_level == "trusted"
+
+
+def test_api_rooms_unknown_actions(settings):
+    """Updating or deleting a room are not supported yet."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    user = UserFactory()
+    room = RoomFactory(users=[(user, RoleChoices.OWNER)])
+
+    token = generate_test_token(
+        user,
+        [
+            ApplicationScope.ROOMS_RETRIEVE,
+            ApplicationScope.ROOMS_DELETE,
+            ApplicationScope.ROOMS_UPDATE,
+        ],
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.delete(f"/external-api/v1.0/rooms/{room.id}/")
+
+    assert response.status_code == 405
+    assert 'method "delete" not allowed.' in str(response.data).lower()
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.patch(f"/external-api/v1.0/rooms/{room.id}/")
+
+    assert response.status_code == 405
+    assert 'method "patch" not allowed.' in str(response.data).lower()
+
+
 def test_api_rooms_response_no_url(settings):
     """Response should not include url field when APPLICATION_BASE_URL is None."""
     settings.APPLICATION_JWT_SECRET_KEY = "devKey"
@@ -290,10 +659,43 @@ def test_api_rooms_response_no_telephony(settings):
     assert response.data["id"] == str(room.id)
 
 
+def test_api_rooms_token_scope_case_insensitive(settings):
+    """Token's scope should be case-insensitive."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+    user = UserFactory()
+    application = ApplicationFactory()
+
+    # Generate token with mixed-case scope "Rooms:List" to verify that scope
+    # validation is case-insensitive (should match "rooms:list")
+    now = datetime.now(timezone.utc)
+    payload = {
+        "iss": settings.APPLICATION_JWT_ISSUER,
+        "aud": settings.APPLICATION_JWT_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(hours=1),
+        "client_id": str(application.client_id),
+        "scope": "Rooms:List",  # Mixed case - should be accepted as "rooms:list"
+        "user_id": str(user.id),
+        "delegated": True,
+    }
+    token = jwt.encode(
+        payload,
+        settings.APPLICATION_JWT_SECRET_KEY,
+        algorithm=settings.APPLICATION_JWT_ALG,
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 200
+
+
 def test_api_rooms_token_without_delegated_flag(settings):
     """Token without delegated flag should be rejected."""
     settings.APPLICATION_JWT_SECRET_KEY = "devKey"
     user = UserFactory()
+    application = ApplicationFactory()
 
     # Generate token without delegated flag
     now = datetime.now(timezone.utc)
@@ -302,7 +704,7 @@ def test_api_rooms_token_without_delegated_flag(settings):
         "aud": settings.APPLICATION_JWT_AUDIENCE,
         "iat": now,
         "exp": now + timedelta(hours=1),
-        "client_id": "test-client",
+        "client_id": str(application.client_id),
         "scope": "rooms:list",
         "user_id": str(user.id),
         "delegated": False,  # Not delegated
@@ -318,7 +720,73 @@ def test_api_rooms_token_without_delegated_flag(settings):
     response = client.get("/external-api/v1.0/rooms/")
 
     assert response.status_code == 401
-    assert "Invalid token type." in str(response.data)
+    assert "invalid token type." in str(response.data).lower()
+
+
+@mock.patch.object(ResourceServerAuthentication, "authenticate", return_value=None)
+def test_api_rooms_token_invalid_signature(mock_rs_authenticate, settings):
+    """Token signed with an invalid key should defer to the next authentication."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+    user = UserFactory()
+    application = ApplicationFactory()
+
+    # Generate token without delegated flag
+    now = datetime.now(timezone.utc)
+    payload = {
+        "iss": settings.APPLICATION_JWT_ISSUER,
+        "aud": settings.APPLICATION_JWT_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(hours=1),
+        "client_id": str(application.client_id),
+        "scope": "rooms:list",
+        "user_id": str(user.id),
+        "delegated": True,
+    }
+    token = jwt.encode(
+        payload,
+        "invalid-private-key",
+        algorithm=settings.APPLICATION_JWT_ALG,
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    mock_rs_authenticate.assert_called()
+    assert response.status_code == 401
+
+
+@mock.patch.object(ResourceServerAuthentication, "authenticate", return_value=None)
+def test_api_rooms_token_invalid_alg(mock_rs_authenticate, settings):
+    """Token signed with an invalid alg should defer to the next authentication."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+    settings.APPLICATION_JWT_ALG = "RS256"
+    user = UserFactory()
+
+    # Generate token without delegated flag
+    now = datetime.now(timezone.utc)
+    payload = {
+        "iss": settings.APPLICATION_JWT_ISSUER,
+        "aud": settings.APPLICATION_JWT_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(hours=1),
+        "client_id": "test-client",
+        "scope": "rooms:list",
+        "user_id": str(user.id),
+        "delegated": True,
+    }
+    token = jwt.encode(
+        payload,
+        settings.APPLICATION_JWT_SECRET_KEY,
+        algorithm="HS256",  # different value
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    mock_rs_authenticate.assert_called()
+    assert response.status_code == 401
 
 
 def test_api_rooms_token_missing_client_id(settings):
@@ -348,7 +816,157 @@ def test_api_rooms_token_missing_client_id(settings):
     response = client.get("/external-api/v1.0/rooms/")
 
     assert response.status_code == 401
-    assert "Invalid token claims." in str(response.data)
+    assert "invalid token claims." in str(response.data).lower()
+
+
+def test_api_rooms_token_missing_user_id(settings):
+    """Token without user_id should be rejected."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+    application = ApplicationFactory()
+
+    now = datetime.now(timezone.utc)
+    payload = {
+        "iss": settings.APPLICATION_JWT_ISSUER,
+        "aud": settings.APPLICATION_JWT_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(hours=1),
+        "client_id": str(application.client_id),
+        "scope": "rooms:list",
+        "delegated": True,
+        # Missing user_id
+    }
+    token = jwt.encode(
+        payload,
+        settings.APPLICATION_JWT_SECRET_KEY,
+        algorithm=settings.APPLICATION_JWT_ALG,
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 401
+    assert "invalid token claims." in str(response.data).lower()
+
+
+def test_api_rooms_token_invalid_audience(settings):
+    """Token with an invalid audience should be rejected."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+    user = UserFactory()
+    application = ApplicationFactory()
+
+    now = datetime.now(timezone.utc)
+    payload = {
+        "iss": settings.APPLICATION_JWT_ISSUER,
+        "aud": "invalid-audience",
+        "iat": now,
+        "exp": now + timedelta(hours=1),
+        "client_id": str(application.client_id),
+        "user_id": str(user.id),
+        "scope": "rooms:list",
+        "delegated": True,
+    }
+    token = jwt.encode(
+        payload,
+        settings.APPLICATION_JWT_SECRET_KEY,
+        algorithm=settings.APPLICATION_JWT_ALG,
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 401
+    assert "invalid token." in str(response.data).lower()
+
+
+def test_api_rooms_token_unknown_user(settings):
+    """Token for unknown user should be rejected."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+    application = ApplicationFactory()
+
+    now = datetime.now(timezone.utc)
+    payload = {
+        "iss": settings.APPLICATION_JWT_ISSUER,
+        "aud": settings.APPLICATION_JWT_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(hours=1),
+        "client_id": str(application.client_id),
+        "user_id": str(uuid.uuid4()),
+        "scope": "rooms:list",
+        "delegated": True,
+    }
+    token = jwt.encode(
+        payload,
+        settings.APPLICATION_JWT_SECRET_KEY,
+        algorithm=settings.APPLICATION_JWT_ALG,
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 401
+    assert "user not found." in str(response.data).lower()
+
+
+def test_api_rooms_token_unknown_application(settings):
+    """Token for unknown application should be rejected."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+
+    now = datetime.now(timezone.utc)
+    payload = {
+        "iss": settings.APPLICATION_JWT_ISSUER,
+        "aud": settings.APPLICATION_JWT_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(hours=1),
+        "client_id": "unknown-client-id",
+        "user_id": str(uuid.uuid4()),
+        "scope": "rooms:list",
+        "delegated": True,
+    }
+    token = jwt.encode(
+        payload,
+        settings.APPLICATION_JWT_SECRET_KEY,
+        algorithm=settings.APPLICATION_JWT_ALG,
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 401
+    assert "application not found." in str(response.data).lower()
+
+
+def test_api_rooms_token_inactive_application(settings):
+    """Token for inactive application should be rejected."""
+    settings.APPLICATION_JWT_SECRET_KEY = "devKey"
+    application = ApplicationFactory(active=False)
+
+    now = datetime.now(timezone.utc)
+    payload = {
+        "iss": settings.APPLICATION_JWT_ISSUER,
+        "aud": settings.APPLICATION_JWT_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(hours=1),
+        "client_id": str(application.client_id),
+        "user_id": str(uuid.uuid4()),
+        "scope": "rooms:list",
+        "delegated": True,
+    }
+    token = jwt.encode(
+        payload,
+        settings.APPLICATION_JWT_SECRET_KEY,
+        algorithm=settings.APPLICATION_JWT_ALG,
+    )
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.get("/external-api/v1.0/rooms/")
+
+    assert response.status_code == 401
+    assert "application is disabled." in str(response.data).lower()
 
 
 @responses.activate
@@ -507,7 +1125,7 @@ def test_resource_server_authentication_successful(settings):
             "aud": "some_client_id",  # settings.OIDC_RS_CLIENT_ID
             "sub": "very-specific-sub",
             "client_id": "some_service_provider",
-            "scope": "openid lasuite_meet lasuite_meet:rooms:list",
+            "scope": "openid lasuite_meet lasuite_meet:rooms:list lasuite_meet:rooms:retrieve",
             "active": True,
         },
     )

src/frontend/src/locales/de/settings.json

@@ -108,12 +108,18 @@
     "label": "Sprache"
   },
   "settingsButtonLabel": "Einstellungen",
+  "accessibility": {
+    "announceReactions": {
+      "label": "Reaktionen vorlesen"
+    }
+  },
   "tabs": {
     "account": "Profil",
     "audio": "Audio",
     "video": "Video",
     "general": "Allgemein",
     "notifications": "Benachrichtigungen",
+    "accessibility": "Barrierefreiheit",
     "transcription": "Transkription"
   }
 }

src/frontend/src/primitives/Spinner.tsx

@@ -1,5 +1,12 @@
 import { ProgressBar } from 'react-aria-components'
-import { css } from '@/styled-system/css'
+import { RiHourglassFill } from '@remixicon/react'
+import { css, cx } from '@/styled-system/css'
+
+const rotatingArcClassName = css({
+  animation: 'rotate 1s ease-in-out infinite',
+  transformOrigin: 'center',
+  transition: 'transform 16ms linear',
+})
 
 export const Spinner = ({
   size = 56,
@@ -13,44 +20,77 @@ export const Spinner = ({
   const r = 14 - strokeWidth
   const c = 2 * r * Math.PI
   return (
-    <ProgressBar aria-label="Loading…" value={30}>
+    <ProgressBar aria-label="Loading..." value={30}>
       {({ percentage }) => (
-        <svg
-          width={size}
-          height={size}
-          viewBox="0 0 28 28"
-          fill="none"
-          strokeWidth={strokeWidth}
+        <div
+          className={css({
+            display: 'inline-flex',
+            alignItems: 'center',
+            justifyContent: 'center',
+          })}
         >
-          <circle
-            cx={center}
-            cy={center}
-            r={r}
-            strokeDasharray={0}
-            strokeDashoffset={0}
-            strokeLinecap="round"
+          <svg
+            width={size}
+            height={size}
+            viewBox="0 0 28 28"
+            fill="none"
+            strokeWidth={strokeWidth}
             className={css({
-              stroke: variant == 'light' ? 'primary.100' : 'transparent',
+              '@media (prefers-reduced-motion: reduce)': {
+                display: 'none',
+              },
             })}
-            style={{}}
-          />
-          <circle
-            cx={center}
-            cy={center}
-            r={r}
-            strokeDasharray={`${c} ${c}`}
-            strokeDashoffset={percentage && c - (percentage / 100) * c}
-            strokeLinecap="round"
+          >
+            <circle
+              cx={center}
+              cy={center}
+              r={r}
+              strokeDasharray={0}
+              strokeDashoffset={0}
+              strokeLinecap="round"
+              className={css({
+                stroke: variant == 'light' ? 'primary.100' : 'transparent',
+              })}
+            />
+            <circle
+              cx={center}
+              cy={center}
+              r={r}
+              strokeDasharray={`${c} ${c}`}
+              strokeDashoffset={
+                typeof percentage === 'number'
+                  ? c - (percentage / 100) * c
+                  : undefined
+              }
+              strokeLinecap="round"
+              className={cx(
+                rotatingArcClassName,
+                css({
+                  stroke: variant == 'light' ? 'primary.800' : 'white',
+                })
+              )}
+            />
+          </svg>
+          <span
+            aria-hidden="true"
             className={css({
-              stroke: variant == 'light' ? 'primary.800' : 'white',
+              display: 'none',
+              color: 'black',
+              '@media (prefers-reduced-motion: reduce)': {
+                display: 'inline-flex',
+              },
             })}
-            style={{
-              animation: `rotate 1s ease-in-out infinite`,
-              transformOrigin: 'center',
-              transition: 'transform 16ms linear',
-            }}
-          />
-        </svg>
+          >
+            <RiHourglassFill
+              size={Math.max(16, Math.round(size * 0.4))}
+              style={{
+                display: 'block',
+                transform: 'translateY(1px)',
+                color: variant == 'light' ? 'primary.800' : 'white',
+              }}
+            />
+          </span>
+        </div>
       )}
     </ProgressBar>
   )