Red Hat Security Advisory

RHSA-2026:21655

OpenShift Container Platform 4.18.43 packages and security update

Released 2026-06-03 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat OpenShift Container Platform 4.18 containernetworking-plugins-1:1.4.0-9.rhaos4.18.el8, podman-5:5.2.2-12.rhaos4.18.el8, podman-5:5.2.2-20.rhaos4.18.el9 +16

Fixes 2 records

TI-2026-24809 CVE-2026-32280 · GHSA-m4pr-4j3g-9v7v

Unexpected work during chain building in crypto/x509

MEDIUM 40

During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00626 Published 2026-04-08 Partial fix · 1.25.9, 1.26.2 CWE-770

TI-2026-20764 CVE-2026-25679 · GHSA-j3gx-2473-5fp8

Incorrect parsing of IPv6 host literals in net/url

MEDIUM 40

url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00827 Published 2026-03-06 Partial fix · 1.25.8, 1.26.1 CWE-425