CVE-2026-40071: Python Tarfile Incomplete Symlink Validation
An extraction loop over `tarfile` members was detected without explicit validation for symbolic or hard links. Attackers can embed a symbolic link in an archive that points outside the destination directory, bypassing normal path traversal validations, to achieve arbitrary file writes (Symlink Escape). Ensure `member.issym()` and `member.islnk()` are checked
Pythongreprules fetch cve-2026-40071-python-tarfile-incomplete-symlink-validation --engine opengrepDescription
An extraction loop over `tarfile` members was detected without explicit validation for symbolic or hard links. Attackers can embed a symbolic link in an archive that points outside the destination directory, bypassing normal path traversal validations, to achieve arbitrary file writes (Symlink Escape). Ensure `member.issym()` and `member.islnk()` are checked
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