CVE-2026-11940 Affecting python-unversioned-command package, versions <0:3.9.25-7.el9_8.3


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.75% (52nd percentile)

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  • Snyk IDSNYK-ALMALINUX9-PYTHONUNVERSIONEDCOMMAND-18764938
  • published14 Aug 2026
  • disclosed12 Aug 2026

Introduced: 12 Aug 2026

NewCVE-2026-11940  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 python-unversioned-command to version 0:3.9.25-7.el9_8.3 or higher.
This issue was patched in ALSA-2026:54268.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-unversioned-command package and not the python-unversioned-command package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

tarfile.extractall() with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself.  The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower path, letting a relative target the filter judged contained escape the destination directory.  This allowed a malicious tar archive to create a symlink pointing outside the destination, enabling out-of-destination file reads or writes. This was an incomplete fix of CVE-2025-4330.

CVSS Base Scores

version 3.1