What is RHSA-2026:12118?

RHSA-2026:12118 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: OpenShift Container Platform 4.18.39 bug fix and security update

Which CVE IDs does RHSA-2026:12118 cover?

RHSA-2026:12118 covers the following CVE IDs: CVE-2026-29063, CVE-2026-33186, CVE-2026-35469, CVE-2025-61731. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:12118?

RHSA-2026:12118 has a CVSS v3 base score of 9.1, published by Red Hat Product Security.

RHSA-2026:12118HighCVSS 9.1

Red Hat Security Advisory: OpenShift Container Platform 4.18.39 bug fix and security update

Vendor

Red Hat Product Security

Published

May 6, 2026

Last Modified

June 3, 2026

🔗 CVE IDs covered (4)

CVE-2026-29063 →CVE-2026-33186 →CVE-2026-35469 →CVE-2025-61731 →

📋 Description

CVE-2025-61731 — cmd/go: cmd/go: Arbitrary file write via malicious pkg-config directive CVE-2026-29063 — immutable-js: Immutable.js: Arbitrary code execution via Prototype Pollution CVE-2026-33186 — google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation CVE-2026-35469 — Kubelet: CRI-O: kube-apiserver: Kubelet, CRI-O, kube-apiserver: Denial of Service via SPDY streaming code

🔗 References (7)

selfhttps://access.redhat.com/errata/RHSA-2026:12118
externalhttps://access.redhat.com/security/cve/CVE-2025-61731
externalhttps://access.redhat.com/security/cve/CVE-2026-29063
externalhttps://access.redhat.com/security/cve/CVE-2026-33186
externalhttps://access.redhat.com/security/cve/CVE-2026-35469
externalhttps://access.redhat.com/security/updates/classification/
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_12118.json