CVE-2026-11940 Affecting python3-libs package, versions <0:3.12.14-1.el10_2


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.75% (52nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ALMALINUX10-PYTHON3LIBS-19265554
  • published26 Aug 2026
  • disclosed24 Aug 2026

Introduced: 24 Aug 2026

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

How to fix?

Upgrade AlmaLinux:10 python3-libs to version 0:3.12.14-1.el10_2 or higher.
This issue was patched in ALSA-2026:58902.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-libs package and not the python3-libs package as distributed by AlmaLinux. See How to fix? for AlmaLinux:10 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.

References

CVSS Base Scores

version 3.1