{"affected":[{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/kyverno/kyverno","product":"kyverno","source":"CNA: VulnCheck","vendor":"kyverno","versions":[{"lessThan":"1.19.2","status":"affected","version":"1.17.0","versionType":"semver"},{"status":"unaffected","version":"1.19.2","versionType":"semver"}]}],"cveId":"CVE-2026-122316","cwes":["CWE-862"],"description":"Kyverno from 1.17.0 before 1.19.2 contains a missing authorization vulnerability in the mutate-existing background processor that allows namespaced tenants to modify resources outside their namespace. Attackers can create a NamespacedMutatingPolicy targeting Namespace objects or victim-namespace resources via CEL expressions, making the background-controller ServiceAccount strip Pod Security labels cluster-wide.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.4,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N","version":"4.0"},{"score":8.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N","version":"3.1"}],"modifiedAt":1793845517167,"publishedAt":1793845517167,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-vm98-8c25-h274"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/kyverno-1.17.0-before-1.19.2-cross-namespace-write-via-namespacedmutatingpolicy-mutateexisting"}],"remediation":[],"revision":"37d0c3809c37e961ac5a411784aa2f2c20a3f4d9c0b33fa30dcfcad8cf5c6828","sources":[{"modifiedAt":1793845517167,"name":"CNA: VulnCheck","retrievedAt":1793848169872,"url":"https://www.cve.org/CVERecord?id=CVE-2026-122316"}],"ssvc":null,"status":"published","title":"Kyverno 1.17.0 before 1.19.2 Cross-Namespace Write via NamespacedMutatingPolicy mutateExisting","updatedAt":1793848169872}