CVE-2026-3644 Affecting python3 package, versions <3.6.15-150300.10.118.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (14th percentile)

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  • Snyk IDSNYK-SLES155-PYTHON3-16478990
  • published7 May 2026
  • disclosed6 May 2026

Introduced: 6 May 2026

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

How to fix?

Upgrade SLES:15.5 python3 to version 3.6.15-150300.10.118.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3 package and not the python3 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