# CVE-2026-73267

## Summary

- **CVE ID:** CVE-2026-73267
- **Severity:** HIGH
- **CVSS Score:** 7.7 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H)
- **CWE:** CWE-602
- **Published:** Aug 21, 2026
- **Last Modified:** Sep 8, 2026

## 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

- Red Hat — multicluster engine for Kubernetes 2.9.0 (1787195995)
- Red Hat — multicluster engine for Kubernetes 2.11 (1787239442)
- Red Hat — multicluster engine for Kubernetes 2.17 (1786577950)
- Red Hat — multicluster engine for Kubernetes 2.10 (1787196014)
- Red Hat — multicluster engine for Kubernetes 2.6 (1787259112)
- Red Hat — multicluster engine for Kubernetes 2.8 (1787259059)
- Red Hat — multicluster engine for Kubernetes 2.9 (1787195995)
- Red Hat — multicluster engine for Kubernetes 2.1 (1787196014)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.46%
- **EPSS Percentile:** 38.7

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._