CVE-2025-8291 Affecting python-3.11 package, versions <3.11.14-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-PYTHON311-13530026
  • published11 Oct 2025
  • disclosed7 Oct 2025

Introduced: 7 Oct 2025

NewCVE-2025-8291  (opens in a new tab)

How to fix?

Upgrade Chainguard python-3.11 to version 3.11.14-r0 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.

The 'zipfile' module would not check the validity of the ZIP64 End of Central Directory (EOCD) Locator record offset value would not be used to locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be assumed to be the previous record in the ZIP archive. This could be abused to create ZIP archives that are handled differently by the 'zipfile' module compared to other ZIP implementations.

Remediation maintains this behavior, but checks that the offset specified in the ZIP64 EOCD Locator record matches the expected value.

CVSS Base Scores

version 3.1