CVE-2025-4516 Affecting python3.14 package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-UBUNTU2510-PYTHON314-13536052
  • published12 Oct 2025
  • disclosed15 May 2025

Introduced: 15 May 2025

CVE-2025-4516  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:25.10 python3.14.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.14 package and not the python3.14 package as distributed by Ubuntu. See How to fix? for Ubuntu:25.10 relevant fixed versions and status.

There is an issue in CPython when using bytes.decode("unicode_escape", error="ignore|replace"). If you are not using the "unicode_escape" encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError.

CVSS Base Scores

version 3.1