CVE-2026-11940 Affecting libpython3_11-1_0 package, versions <3.11.15-150600.3.62.2


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.75% (52nd percentile)

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  • Snyk IDSNYK-SLES157-LIBPYTHON31110-18673409
  • published12 Aug 2026
  • disclosed10 Aug 2026

Introduced: 10 Aug 2026

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

How to fix?

Upgrade SLES:15.7 libpython3_11-1_0 to version 3.11.15-150600.3.62.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpython3_11-1_0 package and not the libpython3_11-1_0 package as distributed by SLES. See How to fix? for SLES:15.7 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