CVE-2026-17107

Name of the Vulnerable Software and Affected Versions Red Hat Advanced Cluster Management for Kubernetes (RHACM) (affected versions not specified) multicluster-engine (MCE) (affected versions not specified)

Description A flaw exists in the cluster-proxy service-proxy component. The service-proxy appends impersonation group headers to proxied requests without removing values supplied by the caller. Because the spoke ServiceAccount has unrestricted impersonation permissions, an authenticated hub principal can inject an Impersonate-Group header to escalate privileges to cluster-admin on every managed cluster.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.