GO-2026-5564

Open Cluster Management (OCM): Cross-cluster privilege escalation via improper Kubernetes client certificate renewal validation in open-cluster-management.io/ocm

At a glance

Published: 2026-06-25 22:34 UTC
Updated: 2026-06-25 23:01 UTC
CVE: CVE-2026-4740
Aliases: GHSA-q4gv-pjmh-c735

Description

Open Cluster Management (OCM): Cross-cluster privilege escalation via improper Kubernetes client certificate renewal validation in open-cluster-management.io/ocm

Affected packages

Package	Versions
Go · open-cluster-management.io/ocm	introduced 0, fixed 1.2.1

References

https://github.com/advisories/GHSA-q4gv-pjmh-c735 ADVISORY
https://nvd.nist.gov/vuln/detail/CVE-2026-4740 ADVISORY
https://access.redhat.com/security/cve/CVE-2026-4740 WEB
https://blog.arfevrier.fr/open-cluster-management-cross-cluster-escape WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2450590 WEB
https://github.com/open-cluster-management-io/ocm/commit/9e70cc1e21a15239c81111062c0b37df4b5a8026 WEB

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — Go Vulnerability Database