CVE-2025-11468 Affecting python3.6 package, versions <3.6.9-1~18.04ubuntu1.13+esm8


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.58% (46th percentile)

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  • Snyk IDSNYK-UBUNTU1804-PYTHON36-15051730
  • published6 Feb 2026
  • disclosed20 Jan 2026

Introduced: 20 Jan 2026

CVE-2025-11468  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 python3.6 to version 3.6.9-1~18.04ubuntu1.13+esm8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.6 package and not the python3.6 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email messages where addresses are user-controlled and not sanitized.

CVSS Base Scores

version 3.1