CVE-2026-73267 | 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 unauthoriz
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.
- 🔗 access.redhat.com/errata/RHSA-2026:59556
- 🔗 access.redhat.com/errata/RHSA-2026:59557
- 🔗 access.redhat.com/errata/RHSA-2026:59558
- 🔗 access.redhat.com/errata/RHSA-2026:59559
- 🔗 access.redhat.com/errata/RHSA-2026:59579
- 🔗 access.redhat.com/errata/RHSA-2026:59593
- 🔗 access.redhat.com/security/cve/CVE-2026-73267
- 🔗 bugzilla.redhat.com/show_bug.cgi
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| Tier | 2026-09-11 | 2026-09-24 |
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CVE-2026-73267 | 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 unauthoriz
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
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