VYPR
Unrated severityNVD Advisory· Published Jun 28, 2026

Debian patool: Patool before 4.0.5 contains a path traversal vulnerability in the safe_extract(…

CVE-2026-29509

Description

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.

Affected products

1

Patches

Vulnerability mechanics

News mentions

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