CVE-2026-15310 Affecting python-3.11 package, versions <3.11.17-r1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.53% (43rd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-PYTHON311-20415617
  • published3 Oct 2026
  • disclosed25 Aug 2026

Introduced: 25 Aug 2026

CVE-2026-15310  (opens in a new tab)

How to fix?

Upgrade Chainguard python-3.11 to version 3.11.17-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-3.11 package and not the python-3.11 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

When decompressing crafted zip files using the bzip/LZMA/Zstandard

compressions, Python could use an attacker-controlled size to

pre-allocate memory, possibly resulting in memory exhaustion.

CVSS Base Scores

version 3.1