CVE-2026-73267

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.

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Produits concernés

• Red Hat multicluster engine for Kubernetes 2.10
• Red Hat multicluster engine for Kubernetes 2.11
• Red Hat multicluster engine for Kubernetes 2.17
• Red Hat multicluster engine for Kubernetes 2.6
• Red Hat multicluster engine for Kubernetes 2.8
• Red Hat multicluster engine for Kubernetes 2.9

Scores CVSS

Faiblesses (CWE)

• CWE-602

Références

• https://access.redhat.com/errata/RHSA-2026:59556
• https://access.redhat.com/errata/RHSA-2026:59557
• https://access.redhat.com/errata/RHSA-2026:59558
• https://access.redhat.com/errata/RHSA-2026:59559
• https://access.redhat.com/errata/RHSA-2026:59579
• https://access.redhat.com/errata/RHSA-2026:59593
• https://access.redhat.com/security/cve/CVE-2026-73267
• https://bugzilla.redhat.com/show_bug.cgi?id=2514218

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories