diff --git a/backend/bracket/routes/util.py b/backend/bracket/routes/util.py
index b37d7762..477f0592 100644
--- a/backend/bracket/routes/util.py
+++ b/backend/bracket/routes/util.py
@@ -47,17 +47,17 @@ async def round_with_matches_dependency(
 
 
 async def stage_dependency(tournament_id: TournamentId, stage_id: StageId) -> StageWithStageItems:
-    stages = await get_full_tournament_details(
+    stages_result = await get_full_tournament_details(
         tournament_id, no_draft_rounds=False, stage_id=stage_id
     )
 
-    if len(stages) < 1:
+    if len(stages_result) < 1:
         raise HTTPException(
             status_code=status.HTTP_404_NOT_FOUND,
             detail=f"Could not find stage with id {stage_id}",
         )
 
-    return stages[0]
+    return stages_result[0]
 
 
 async def stage_item_dependency(
diff --git a/backend/tests/integration_tests/api/teams_test.py b/backend/tests/integration_tests/api/teams_test.py
index 9713822f..231de839 100644
--- a/backend/tests/integration_tests/api/teams_test.py
+++ b/backend/tests/integration_tests/api/teams_test.py
@@ -5,11 +5,19 @@ import pytest
 from bracket.database import database
 from bracket.models.db.team import Team
 from bracket.utils.db import fetch_one_parsed_certain
-from bracket.utils.dummy_records import DUMMY_MOCK_TIME, DUMMY_TEAM1
+from bracket.utils.dummy_records import DUMMY_MOCK_TIME, DUMMY_TEAM1, DUMMY_TOURNAMENT
 from bracket.utils.http import HTTPMethod
-from tests.integration_tests.api.shared import SUCCESS_RESPONSE, send_tournament_request
+from tests.integration_tests.api.shared import (
+    SUCCESS_RESPONSE,
+    send_auth_request,
+    send_tournament_request,
+)
 from tests.integration_tests.models import AuthContext
-from tests.integration_tests.sql import assert_row_count_and_clear, inserted_team
+from tests.integration_tests.sql import (
+    assert_row_count_and_clear,
+    inserted_team,
+    inserted_tournament,
+)
 
 
 @pytest.mark.asyncio(loop_scope="session")
@@ -152,3 +160,25 @@ async def test_team_upload_and_remove_logo(
         assert not await aiofiles.os.path.exists(
             f"static/team-logos/{response['data']['logo_path']}"
         )
+
+
+@pytest.mark.asyncio(loop_scope="session")
+async def test_cross_tournament_team_access_denied(
+    startup_and_shutdown_uvicorn_server: None, auth_context: AuthContext
+) -> None:
+    """Regression test: a team from tournament B cannot be accessed via tournament A's URL."""
+    async with inserted_tournament(
+        DUMMY_TOURNAMENT.model_copy(
+            update={"club_id": auth_context.club.id, "dashboard_endpoint": None}
+        )
+    ) as other_tournament:
+        async with inserted_team(
+            DUMMY_TEAM1.model_copy(update={"tournament_id": other_tournament.id})
+        ) as other_team:
+            response = await send_auth_request(
+                HTTPMethod.PUT,
+                f"tournaments/{auth_context.tournament.id}/teams/{other_team.id}",
+                auth_context,
+                json={"name": "Hacked", "active": True, "player_ids": []},
+            )
+            assert response.get("detail") == f"Could not find team with id {other_team.id}"