Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-73267
Red Hat multicluster engine for Kubernetes 2.10 — Clusterclaims-controller: managedcluster deletion keyed solely on clusterclaim.spec.namespace with no local ownership check
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L N C N N H 7.7 .0063 48.2 —
AFFECTED
Product Versions Fixed
multicluster engine for Kubernetes 2.10 unspecified 1787196014
multicluster engine for Kubernetes 2.11 unspecified 1787239442
multicluster engine for Kubernetes 2.17 unspecified 1786577950
multicluster engine for Kubernetes 2.6 unspecified 1787259112
multicluster engine for Kubernetes 2.8 unspecified 1787259059
multicluster engine for Kubernetes 2.9 unspecified 1787195995
TIMELINE
Aug 11 Reserved by redhat
Aug 21 Published (CNA: redhat)
Aug 25 PATCH SHIPPED — CVE-2026-73267 (Red Hat multicluster engine for Kubernetes 2.10). Fixed in multicluster engine for Kubernetes 2.10 1787196014.
Description
A flaw was found in the clusterclaims-controller component of multicluster engine (MCE). A tenant with standard permissions to create and delete ClusterClaim resources can exploit this by manipulating the `spec.namespace` field. This allows the tenant to specify and delete any ManagedCluster, including the hub's local-cluster or other tenants' clusters, due to a missing ownership check. This vulnerability can lead to a denial of service by enabling unauthorized deletion of ManagedClusters.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| August 11, 2026 | Reserved | Reserved by redhat |
| August 21, 2026 | Published | Published (CNA: redhat) |
| August 25, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-73267 (Red Hat multicluster engine for Kubernetes 2.10). Fixed in multicluster engine for Kubernetes 2.10 1787196014. |
Affected
Affected products and packages — 6 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | multicluster engine for Kubernetes 2.10 | — | — | 1787196014 |
| Red Hat | multicluster engine for Kubernetes 2.11 | — | — | 1787239442 |
| Red Hat | multicluster engine for Kubernetes 2.17 | — | — | 1786577950 |
| Red Hat | multicluster engine for Kubernetes 2.6 | — | — | 1787259112 |
| Red Hat | multicluster engine for Kubernetes 2.8 | — | — | 1787259059 |
| Red Hat | multicluster engine for Kubernetes 2.9 | — | — | 1787195995 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-73267 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
