CVE-2026-73267highCWE-602

CVE-2026-73267: high-severity vulnerability in Red Hat multicluster engine for Kubernetes 2.10

Clusterclaims-controller: managedcluster deletion keyed solely on clusterclaim.spec.namespace with no local ownership check

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.7epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Affected products
Red Hat · multicluster engine for Kubernetes 2.10Red Hat · multicluster engine for Kubernetes 2.11Red Hat · multicluster engine for Kubernetes 2.17Red Hat · multicluster engine for Kubernetes 2.6Red Hat · multicluster engine for Kubernetes 2.8Red Hat · multicluster engine for Kubernetes 2.9
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