Red Hat Security Advisory

RHSA-2026:71455

OpenShift Container Platform 4.21.35 security and extras update

Released 2026-09-29 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat OpenShift Container Platform 4.21 registry.redhat.io/openshift4/ose-cluster-nfd-rhel9-operator

Fixes 1 record

TI-2026-26186 CVE-2026-33814

Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net

MEDIUM 40

When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.0084 Published 2026-05-07 Partial fix · 0.53.0, 1.25.10 +1 CWE-835