7.7
High
CVE-2026-73267 A flaw was found in the clusterclaims-controller component of multicluster engine (MCE)
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| multicluster engine for Kubernetes 2.10 1787196014 | earliest → < 1787196014 | 1787196014 |
| multicluster engine for Kubernetes 2.11 1787239442 | earliest → < 1787239442 | 1787239442 |
| multicluster engine for Kubernetes 2.17 1786577950 | earliest → < 1786577950 | 1786577950 |
| multicluster engine for Kubernetes 2.6 1787259112 | earliest → < 1787259112 | 1787259112 |
| multicluster engine for Kubernetes 2.8 1787259059 | earliest → < 1787259059 | 1787259059 |
| multicluster engine for Kubernetes 2.9 1787195995 | earliest → < 1787195995 | 1787195995 |
| multicluster engine for Kubernetes 2.1 1787196014 | earliest → < 1787196014 | 1787196014 |
| multicluster engine for Kubernetes 2.9.0 1787195995 | earliest → < 1787195995 | 1787195995 |
| multicluster engine for Kubernetes 2.11.0 1787239442 | earliest → < 1787239442 | 1787239442 |
References
- RHSA-2026:59556 access.redhat.com
- RHSA-2026:59557 access.redhat.com
- RHSA-2026:59558 access.redhat.com
- RHSA-2026:59559 access.redhat.com
- RHSA-2026:59579 access.redhat.com
- RHSA-2026:59593 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2514218 bugzilla.redhat.com
Timeline
- Published
- Last modified
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CVE-2026-73266
A flaw was found in the clusterclaims-controller component of Multicluster Engine (MCE)
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