{"id":"EM-20261105-5TKR","url":"https://cyber.eventmonitor.net/incident/EM-20261105-5TKR/kyverno-vulnerability-cve-2026-122309/","type":"cve","title":"Kyverno Vulnerability (CVE-2026-122309)","subtitle":"CVE-2026-122309","subject":"CVE-2026-122309","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-05T03:17:23.170Z","firstSignal":"2026-11-05T02:25:12.000Z","lastSignal":"2026-11-05T03:17:23.170Z","updated":"2026-11-06T12:16:45.734Z","revision":1,"life":[{"status":"Born","at":"2026-11-05T03:17:23.170Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-05T03:17:23.170Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-05T02:25:12.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-05T03:17:23.170Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261105-5TKR created."},{"at":"2026-11-05T03:17:23.170Z","what":"Severity raised to High by C6"}],"stages":[{"name":"Disclosed","at":"2026-11-05T03:17:23.170Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-05T03:17:23.170Z","detail":"CVSS 8.2 · EPSS 0.2%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-05T02:25:12.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-05T02:25:12.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":2,"title":"Red Hat: CVE-2026-122309 (moderate)","text":"github.com/kyverno/kyverno: Kyverno: Denial of Service via unbounded CEL policy evaluation","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-122309.json"},{"at":"2026-11-05T03:17:23.170Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-122309 (CVSS 8.2)","text":"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.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122309"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-05T03:17:23.170","score":8.2,"severity":"HIGH","desc":"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…","product":"","seen":1793900599849},"kev":null,"epss":{"epss":0.00197,"pct":0.09518,"at":1793967405734},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}