Security vulnerabilities and automated fixes for bigquery issues
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A high-severity SQL injection vulnerability was discovered in a BigQuery connector's query-building logic, where Python f-strings interpolated user-controlled identifiers—project_id, dataset_id, table_id, and timestamp_column—directly into SQL without validation. An attacker with control over connector configuration could inject arbitrary BigQuery SQL, including destructive statements. The fix introduces strict allowlist-based identifier validation using compiled regular expressions before any S