{"id":"CVE-2026-122313","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-122313","summary":"Kyverno from 1.17.0 before 1.19.2 contains a privilege escalation vulnerability that allows namespace-scoped tenants to modify resources in other namespaces through NamespacedMutatingPolicy…","details":"Kyverno from 1.17.0 before 1.19.2 contains a privilege escalation vulnerability that allows namespace-scoped tenants to modify resources in other namespaces through NamespacedMutatingPolicy targetMatchConstraints.expression CEL output lacking namespace checks. Attackers can emit a literal target such as another tenant's RoleBinding, which the cluster-wide background controller then mutates to add attacker subjects or alter Roles, NetworkPolicies, and ConfigMaps.","published":"2026-11-05T03:17:23.853","modified":"2026-11-05T03:17:23.853","cvss":{"score":9.9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-f96w-622v-rqpq"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/kyverno-1.17.0-before-1.19.2-cross-namespace-privilege-escalation-via-namespacedmutatingpolicy"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-05T03:17:23.853"}}