CVE-2026-17107

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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."}], "lastModified": "2026-09-08T13:17:18.123", "sourceIdentifier": "secalert@redhat.com"}