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Python: improve the filtering of in-memory vector stores #13440

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Python: improve the filtering of in-memory vector stores #13440

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11 changes: 10 additions & 1 deletion python/semantic_kernel/connectors/in_memory.py
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Original file line number Diff line number Diff line change
Expand Up @@ -244,7 +244,16 @@ def _get_filtered_records(self, options: VectorSearchOptions) -> dict[TKey, Attr

def _parse_and_validate_filter(self, filter_str: str) -> Callable:
"""Parse and validate a string filter as a lambda expression, then return the callable."""
forbidden_names = {"__import__", "open", "eval", "exec", "__builtins__"}
forbidden_names = {
"__import__",
"open",
"eval",
"exec",
"__builtins__",
"__class__",
"__bases__",
"__subclasses__",
}
try:
tree = ast.parse(filter_str, mode="eval")
except SyntaxError as e:
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