What is RHSA-2026:21704?

RHSA-2026:21704 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: OpenShift Container Platform 4.20.24 security and extras update

Which CVE IDs does RHSA-2026:21704 cover?

RHSA-2026:21704 covers the following CVE IDs: CVE-2025-58183, CVE-2026-33186. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:21704?

RHSA-2026:21704 has a CVSS v3 base score of 9.1, published by Red Hat Product Security.

RHSA-2026:21704HighCVSS 9.1

Red Hat Security Advisory: OpenShift Container Platform 4.20.24 security and extras update

Vendor

Red Hat Product Security

Published

June 3, 2026

Last Modified

June 3, 2026

🔗 CVE IDs covered (2)

CVE-2025-58183 →CVE-2026-33186 →

📋 Description

CVE-2025-58183 — golang: archive/tar: Unbounded allocation when parsing GNU sparse map 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

🔗 References (5)

selfhttps://access.redhat.com/errata/RHSA-2026:21704
externalhttps://access.redhat.com/security/cve/CVE-2025-58183
externalhttps://access.redhat.com/security/cve/CVE-2026-33186
externalhttps://access.redhat.com/security/updates/classification/
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_21704.json