Descripción
A flaw was found in the cluster-proxy service-proxy component used in Red Hat Advanced Cluster Management for Kubernetes (RHACM) and multicluster-engine (MCE). The service-proxy appends impersonation group headers to proxied requests without first removing caller-supplied values, and the spoke ServiceAccount holds unrestricted impersonation permissions. An authenticated hub principal can inject an Impersonate-Group header to escalate to cluster-admin on every managed cluster.
CVSS 8.5EPSS 0.346%Riesgo 0.88
Ver fuente- Publicación
- 2026-07-24 19:16:55
- Versiones afectadas
- unknown
- Tipo
- Software crítico
- Última modificación
- 2026-08-09 16:16:52
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H