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Medium4.8Red Hat Linux

Medium [CVE-2026-0672] Header injection in http.cookies.Morsel in Python

This medium-severity Red Hat Linux advisory covers CVE-2026-0672 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 8.

CVE-2026-0672 Published Jan 20, 2026
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Header injection in http.cookies. Morsel in Python.

Red Hat rates this moderate (CVSS 4.8). Weakness: CWE-93.

Affected package(s): python3.12, rhui5/rhua-rhel9:1779798222, rhui5/installer-rhel9:1779798165. Resolved in Red Hat advisory RHSA-2026:19064 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8.

Affected versions
  • python3.12-0:3.12.13-2.el9_8
  • python3.12-0:3.12.13-2.el10_2
  • python3.12-0:3.12.13-2.el8_10
  • rhui5/rhua-rhel9:1779798222
  • rhui5/installer-rhel9:1779798165

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • RHSA-2026:19064

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:19064 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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