Red Hat Security Advisory

RHSA-2025:7535

Red Hat OpenStack Platform 18.0 (python-h11) security update

Released 2025-05-14 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat OpenStack Services on OpenShift 18.0 python-h11-0.12.0-4.el9ost, python3-h11-0.12.0-4.el9ost

TI-2025-28443 CVE-2025-43859 · GHSA-vqfr-h8mv-ghfj

MEDIUM 48

h11 is a Python implementation of HTTP/1.1.

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00594 Published 2025-04-24 Partial fix · 0.16.0 CWE-444