Red Hat Security Advisory

RHSA-2026:89727

OpenShift Container Platform 4.18.59 security and extras update

Released 2026-10-27 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat OpenShift Container Platform 4.18 registry.redhat.io/openshift4/ose-cluster-capacity-rhel9, registry.redhat.io/openshift4/ose-csi-external-provisioner-rhel9, registry.redhat.io/openshift4/ose-local-storage-diskmaker-rhel9 +4

Fixes 2 records

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

TI-2026-34256 CVE-2026-46597 · GHSA-q4h4-gmj2-qvw2

Invoking byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh

LOW 39

An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00473 Published 2026-05-22 Partial fix · 0.52.0 CWE-704