CVE-2026-29509 — Patool < 4.0.5 Path Traversal via safe_extract() Function
Patool before 4.0.5 contains a path traversal vulnerability in the safe_extract() function in patoolib/programs/py_tarfile.py when running on Python before 3.12, where the is_wi…
Published: 2026-06-26 · CVSS: 5.3 · CVSS 4.0
Patool before 4.0.5 contains a path traversal vulnerability in the safe_extract() function in patoolib/programs/py_tarfile.py when running on Python before 3.12, where the is_within_directory() helper uses os.path.commonprefix() for character-level string comparison instead of path-level comparison, allowing a crafted archive member path to bypass the containment check. Attackers can supply a malicious archive with specially crafted member paths to write arbitrary files.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7