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Python: Extend InMemoryCollection filter attribute blocklist #13897

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Merged
moonbox3 merged 1 commit into from
Apr 22, 2026
+17 −0
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Python: Extend InMemoryCollection filter attribute blocklist #13897

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1 change: 1 addition & 0 deletions python/semantic_kernel/connectors/in_memory.py
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Original file line number Diff line number Diff line change
Expand Up @@ -516,6 +516,7 @@ class InMemoryCollection(
blocked_filter_attributes: ClassVar[set[str]] = {
# Object introspection - can lead to class/module access
"__class__",
"__base__",
"__bases__",
"__mro__",
"__subclasses__",
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16 changes: 16 additions & 0 deletions python/tests/unit/connectors/memory/test_in_memory.py
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Expand Up @@ -196,6 +196,22 @@ def test_direct_mutating_method_call_remains_blocked(collection):
collection._parse_and_validate_filter("lambda x: x.clear() or True")


@mark.parametrize(
"attr",
[
"__base__",
"__bases__",
"__class__",
"__mro__",
"__subclasses__",
"__globals__",
],
)
def test_blocked_dunder_attributes_rejected(collection, attr):
with raises(VectorStoreOperationException, match=f"Access to attribute '{attr}' is not allowed"):
collection._parse_and_validate_filter(f"lambda x: x.{attr}")


async def test_valid_lambda_filter_with_get_method(collection):
record1 = {"id": "1", "vector": [1, 2, 3, 4, 5]}
record2 = {"id": "2", "vector": [5, 4, 3, 2, 1]}
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