fix: require active user for monitor endpoints

src/backend/base/langflow/api/v1/monitor.py

@@ -58,7 +58,7 @@ async def get_message_sessions(
         raise HTTPException(status_code=500, detail=str(e)) from e
 
 
-@router.get("/messages")
+@router.get("/messages", dependencies=[Depends(get_current_active_user)])
 async def get_messages(
     session: DbSession,
     flow_id: Annotated[UUID | None, Query()] = None,
@@ -162,7 +162,7 @@ async def update_session_id(
     return message_responses
 
 
-@router.delete("/messages/session/{session_id}", status_code=204)
+@router.delete("/messages/session/{session_id}", status_code=204, dependencies=[Depends(get_current_active_user)])
 async def delete_messages_session(
     session_id: str,
     session: DbSession,
@@ -180,7 +180,7 @@ async def delete_messages_session(
     return {"message": "Messages deleted successfully"}
 
 
-@router.get("/transactions")
+@router.get("/transactions", dependencies=[Depends(get_current_active_user)])
 async def get_transactions(
     flow_id: Annotated[UUID, Query()],
     session: DbSession,

src/backend/tests/unit/api/v1/test_monitor_auth.py

@@ -0,0 +1,83 @@
+"""Security tests for monitor endpoints requiring authentication."""
+
+import pytest
+from fastapi import status
+from httpx import AsyncClient
+
+
+async def test_get_messages_requires_auth(client: AsyncClient):
+    """Test that GET /monitor/messages requires authentication."""
+    response = await client.get("api/v1/monitor/messages")
+    # Langflow returns 403 for missing/invalid authentication
+    assert response.status_code == status.HTTP_403_FORBIDDEN
+
+
+async def test_get_transactions_requires_auth(client: AsyncClient):
+    """Test that GET /monitor/transactions requires authentication."""
+    # Include required query parameter
+    response = await client.get("api/v1/monitor/transactions?flow_id=00000000-0000-0000-0000-000000000000")
+    # Langflow returns 403 for missing/invalid authentication
+    assert response.status_code == status.HTTP_403_FORBIDDEN
+
+
+async def test_delete_messages_session_requires_auth(client: AsyncClient):
+    """Test that DELETE /monitor/messages/session/{session_id} requires authentication."""
+    response = await client.delete("api/v1/monitor/messages/session/test-session")
+    # Langflow returns 403 for missing/invalid authentication
+    assert response.status_code == status.HTTP_403_FORBIDDEN
+
+
+async def test_get_messages_with_fake_token(client: AsyncClient):
+    """Test that GET /monitor/messages rejects fake tokens."""
+    response = await client.get("api/v1/monitor/messages", headers={"Authorization": "Bearer fake-token"})
+    # Langflow returns 401 for invalid Bearer tokens (JWT validation fails)
+    assert response.status_code == status.HTTP_401_UNAUTHORIZED
+
+
+async def test_get_transactions_with_fake_token(client: AsyncClient):
+    """Test that GET /monitor/transactions rejects fake tokens."""
+    response = await client.get(
+        "api/v1/monitor/transactions?flow_id=00000000-0000-0000-0000-000000000000",
+        headers={"Authorization": "Bearer fake-token"},
+    )
+    # Langflow returns 401 for invalid Bearer tokens (JWT validation fails)
+    assert response.status_code == status.HTTP_401_UNAUTHORIZED
+
+
+async def test_delete_messages_session_with_fake_token(client: AsyncClient):
+    """Test that DELETE /monitor/messages/session/{session_id} rejects fake tokens."""
+    response = await client.delete(
+        "api/v1/monitor/messages/session/test-session", headers={"Authorization": "Bearer fake-token"}
+    )
+    # Langflow returns 401 for invalid Bearer tokens (JWT validation fails)
+    assert response.status_code == status.HTTP_401_UNAUTHORIZED
+
+
+@pytest.mark.usefixtures("active_user")
+async def test_get_messages_with_valid_auth(client: AsyncClient, logged_in_headers):
+    """Test that GET /monitor/messages works with valid authentication."""
+    response = await client.get("api/v1/monitor/messages", headers=logged_in_headers)
+    # Should return 200 OK (even if empty list)
+    assert response.status_code == status.HTTP_200_OK
+    assert isinstance(response.json(), list)
+
+
+@pytest.mark.usefixtures("active_user")
+async def test_get_transactions_with_valid_auth(client: AsyncClient, logged_in_headers):
+    """Test that GET /monitor/transactions works with valid authentication."""
+    response = await client.get(
+        "api/v1/monitor/transactions?flow_id=00000000-0000-0000-0000-000000000000", headers=logged_in_headers
+    )
+    # Should return 200 OK with pagination structure
+    assert response.status_code == status.HTTP_200_OK
+    result = response.json()
+    assert "items" in result
+    assert "total" in result
+
+
+@pytest.mark.usefixtures("active_user")
+async def test_delete_messages_session_with_valid_auth(client: AsyncClient, logged_in_headers):
+    """Test that DELETE /monitor/messages/session/{session_id} works with valid authentication."""
+    response = await client.delete("api/v1/monitor/messages/session/test-session", headers=logged_in_headers)
+    # Should return 204 No Content
+    assert response.status_code == status.HTTP_204_NO_CONTENT