CVE-2026-4740Published
A flaw was found in Open Cluster Management (OCM), the technology underlying Red Hat Advanced Cluster Management (ACM). Improper validation of Kubernetes client certificate renewal allows a managed cluster administrator to forge a client ce…
Exact source revision recorded 27 Oct 2026 13:11:48 UTC. It does not establish the source's current position. Latest evidence.
Explicit identifiers and source references
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CVE-2026-4740 · Microsoft / collected KEV context
nvd · CVE-2026-4740
- https://access.redhat.com/errata/RHSA-2026:11414
- https://access.redhat.com/errata/RHSA-2026:13542
- https://access.redhat.com/errata/RHSA-2026:13853
- https://access.redhat.com/errata/RHSA-2026:8218
- https://access.redhat.com/errata/RHSA-2026:9848
- https://access.redhat.com/security/cve/CVE-2026-4740
- https://blog.arfevrier.fr/open-cluster-management-cross-cluster-escape/
- https://bugzilla.redhat.com/show_bug.cgi?id=2450590
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4740.json
Current operational correlations are not mixed into this historical source record. Open latest evidence to discover current connections.