PT-2026-52897 · Undefined · Undefined

Published 2026-06-26 · Updated 2026-06-26 · CVE-2026-29509

NVD

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

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.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-29509

Affected Products

Undefined

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-29509 · Security Note
• https://github.com/wummel/patool/blob/main/doc/changelog.txt · Note
• https://github.com/wummel/patool/releases/tag/4.0.5 · Note
• https://vulncheck.com/advisories/patool-path-traversal-via-safe-extract-function · Note