{"id":"CVE-2026-122302","published":"2026-11-05T03:17:22.030","lastModified":"2026-11-05T03:17:22.030","description":"Kyverno before 1.19.2 contains a privilege escalation vulnerability that allows namespace admins to create resources beyond their RBAC because generate-rule admission checks verify the controller's permissions, not the author's. Attackers can create a namespaced Policy with generate rules targeting other namespaces or cluster-scoped kinds, making the background controller create or clone resources cluster-wide.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-269"],"vendors":[],"products":[],"references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-q62c-r9v2-cf64","tags":[]},{"url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.2-privilege-escalation-via-generate-rule-permission-check","tags":[]}],"exploitRefs":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-q62c-r9v2-cf64","tags":[]}],"hasPoc":true,"ai":{"summary":"Kyverno before 1.19.2 has a privilege escalation flaw where namespace admins can bypass RBAC by creating generate rules that trigger cluster-wide resource creation via the controller's elevated permissions instead of the author's.","exploitability":"Exploitation requires only namespace-admin-level access and knowledge of Kyverno's generate rule syntax; no external dependencies or complex setup.","blast_radius":"Successful exploitation allows attackers to create or clone resources cluster-wide—including in other namespaces or at cluster scope—potentially compromising confidentiality, integrity, and availability across the entire cluster.","remediation":"Upgrade to Kyverno 1.19.2 or later.","detection":"Defenders should monitor for Policy resources with generate rules that reference cluster-scoped kinds or target namespaces beyond the author's namespace; such policies are not expected to be creatable by namespace admins and indicate potential abuse.","tags":["privilege-escalation","rbac-bypass","kubernetes","kyverno","generate-rule-abuse"],"model":"garnet-coder","analyzedAt":"2026-11-05T09:46:39.801Z"}}