CVE-2026-3644 Affecting python39-base package, versions <3.9.25-150300.4.99.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (14th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-SLES155-PYTHON39BASE-16068393
  • published15 Apr 2026
  • disclosed13 Apr 2026

Introduced: 13 Apr 2026

NewCVE-2026-3644  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 python39-base to version 3.9.25-150300.4.99.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39-base package and not the python39-base package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

The fix for CVE-2026-0672, which rejected control characters in http.cookies.Morsel, was incomplete. The Morsel.update(), |= operator, and unpickling paths were not patched, allowing control characters to bypass input validation. Additionally, BaseCookie.js_output() lacked the output validation applied to BaseCookie.output().

CVSS Base Scores

version 3.1