Clusterclaims-controller: managedcluster deletion keyed solely on clusterclaim.spec.namespace with no local ownership check (Red Hat multicluster engine for Kubernetes 2.10)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.63 % · percentile 50 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Awaiting Analysis
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.
Weaknesses (CWE)
- CWE-602 — Client-Side Enforcement of Server-Side Security
References
- 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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H | redhat |
| CVSS 3.1 | HIGH 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H | NVD · secalert@redhat.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-63800
- GCVE · GCVE-0-2026-73267
Affected products
| Product | Versions |
|---|---|
| Red Hat · multicluster engine for Kubernetes 2.10 | unaffected 1787196014 < * |
| Red Hat · multicluster engine for Kubernetes 2.11 | unaffected 1787239442 < * |
| Red Hat · multicluster engine for Kubernetes 2.17 | unaffected 1786577950 < * |
| Red Hat · multicluster engine for Kubernetes 2.6 | unaffected 1787259112 < * |
| Red Hat · multicluster engine for Kubernetes 2.8 | unaffected 1787259059 < * |
| Red Hat · multicluster engine for Kubernetes 2.9 | unaffected 1787195995 < * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |