diff --git a/src/main.py b/src/main.py
index 714be72..e4270c7 100644
--- a/src/main.py
+++ b/src/main.py
@@ -107,7 +107,23 @@ async def context() -> JSONResponse:
         and all(field in r for field in ("id", "name", "full_name", "html_url"))
     ]
     issue_models = [
-        Issue(id=i["id"], number=i["number"], title=i["title"], state=i["state"], labels=[l.get("name", "") for l in (i.get("labels") or [])], assignees=[a.get("login", "") for a in (i.get("assignees") or [])], url=i["html_url"])
+        Issue(
+            id=i["id"],
+            number=i["number"],
+            title=i["title"],
+            state=i["state"],
+            labels=[
+                label.get("name", "")
+                for label in (i.get("labels") or [])
+                if isinstance(label, dict)
+            ],
+            assignees=[
+                assignee.get("login", "")
+                for assignee in (i.get("assignees") or [])
+                if isinstance(assignee, dict)
+            ],
+            url=i["html_url"],
+        )
         for i in (issues_data or [])[:50]
         if isinstance(i, dict)
         and all(
diff --git a/tests/test_context_timeout.py b/tests/test_context_timeout.py
index d3e2b22..5fbc2bb 100644
--- a/tests/test_context_timeout.py
+++ b/tests/test_context_timeout.py
@@ -65,6 +65,37 @@ async def test_context_normalizes_nullable_issue_collections(monkeypatch):
     assert issue["assignees"] == []
 
 
+@pytest.mark.anyio
+async def test_context_skips_malformed_nested_issue_metadata(monkeypatch):
+    async def user():
+        return {"id": 1, "login": "timmy"}
+
+    async def empty_collection():
+        return []
+
+    async def issue_collection():
+        return [{
+            "id": 85,
+            "number": 85,
+            "title": "Malformed nested metadata",
+            "state": "open",
+            "labels": [None, {"name": "bug"}, "invalid"],
+            "assignees": [None, {"login": "timmy"}, "invalid"],
+            "html_url": "https://forge.example/issues/85",
+        }]
+
+    monkeypatch.setattr(main, "current_user", user)
+    monkeypatch.setattr(main, "repos", empty_collection)
+    monkeypatch.setattr(main, "issues", issue_collection)
+    monkeypatch.setattr(main, "pull_requests", empty_collection)
+
+    response = await main.context()
+    issue = json.loads(response.body)["issues"][0]
+
+    assert issue["labels"] == ["bug"]
+    assert issue["assignees"] == ["timmy"]
+
+
 @pytest.mark.anyio
 async def test_context_normalizes_nullable_repository_description(monkeypatch):
     async def user():