Medium5.4Red Hat & Ubuntu Linux
Incomplete control character validation in http.cookies
CVE-2026-3644 Published Mar 16, 2026
CVE-2026-3644
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Incomplete control character validation in http.cookies. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-791. Affected package(s): python3.12, python3, python3.14, rhui5/rhua-rhel9:1779798222, rhui5/installer-rhel9:1779798165. Resolved in Red Hat advisory RHSA-2026:19019 — update the affected packages (`sudo dnf update`).
Affected versions
- python3.12-0:3.12.13-2.el9_8
- python3-12-main-3.12.13-3.hum1
- python3-14-main-3.14.4-1.hum1
- python3.12-0:3.12.13-2.el10_2
- python3.12-0:3.12.13-2.el8_10
- python3.14-0:3.14.4-2.el9_8
- python3.14-0:3.14.4-2.el10_2
- python3-13-main-3.13.13-1.hum1
- python3-11-main-3.11.15-4.hum1
- rhui5/rhua-rhel9:1779798222
- rhui5/installer-rhel9:1779798165
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
Fixed versions
- RHSA-2026:19019
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:19019 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
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