{"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":"0","versionType":"semver"},{"status":"unaffected","version":"1.19.2","versionType":"semver"}]}],"cveId":"CVE-2026-122309","cwes":["CWE-400"],"description":"Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespace-scoped policy authors to exhaust CPU and memory by submitting CEL expressions evaluated without runtime cost limits. Attackers can create a NamespacedValidatingPolicy or NamespacedDeletingPolicy with nested map comprehensions over large ConfigMap fields to OOM-kill Kyverno pods and block cluster-wide admission.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.2,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","version":"4.0"},{"score":6.2,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793845512280,"publishedAt":1793845512280,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-m8p2-qqmx-j53x"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-unbounded-cel-policy-evaluation-cost"}],"remediation":[],"revision":"10404339c2b8684a6e03e7311917d1785af99e571ff331900bdaf99bb977969e","sources":[{"modifiedAt":1793845512280,"name":"CNA: VulnCheck","retrievedAt":1793848161192,"url":"https://www.cve.org/CVERecord?id=CVE-2026-122309"}],"ssvc":null,"status":"published","title":"Kyverno before 1.19.2 Denial of Service via Unbounded CEL Policy Evaluation Cost","updatedAt":1793848161192}