What is RHSA-2026:36167?

RHSA-2026:36167 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: Assisted Installer RHEL 9 components for Multicluster Engine for Kubernetes 2.6.12

Which CVE IDs does RHSA-2026:36167 cover?

RHSA-2026:36167 covers the following CVE IDs: CVE-2026-39821, CVE-2026-39828, CVE-2026-53488. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:36167?

RHSA-2026:36167 has a CVSS v3 base score of 8.8, published by Red Hat Product Security.

RHSA-2026:36167HighCVSS 8.8

Red Hat Security Advisory: Assisted Installer RHEL 9 components for Multicluster Engine for Kubernetes 2.6.12

Vendor

Red Hat Product Security

Published

July 7, 2026

Last Modified

July 22, 2026

🔗 CVE IDs covered (3)

CVE-2026-39821 →CVE-2026-39828 →CVE-2026-53488 →

📋 Description

CVE-2026-39821 — golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing CVE-2026-39828 — golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions CVE-2026-53488 — github.com/containerd/containerd: containerd: Host-root command execution via unvalidated image config labels in CRI plugin

🔗 References (6)

selfhttps://access.redhat.com/errata/RHSA-2026:36167
externalhttps://access.redhat.com/security/cve/CVE-2026-39821
externalhttps://access.redhat.com/security/cve/CVE-2026-39828
externalhttps://access.redhat.com/security/cve/CVE-2026-53488
externalhttps://access.redhat.com/security/updates/classification/
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_36167.json