{"id":"EM-20261105-5V6G","url":"https://cyber.eventmonitor.net/incident/EM-20261105-5V6G/kyverno-vulnerability-cve-2026-122318/","type":"cve","title":"Kyverno Vulnerability (CVE-2026-122318)","subtitle":"CVE-2026-122318","subject":"CVE-2026-122318","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-05T03:17:24.523Z","firstSignal":"2026-11-05T02:25:17.000Z","lastSignal":"2026-11-05T03:17:24.523Z","updated":"2026-11-06T12:16:45.734Z","revision":1,"life":[{"status":"Born","at":"2026-11-05T03:17:24.523Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-05T03:17:24.523Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-05T02:25:17.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-05T03:17:24.523Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261105-5V6G created."}],"stages":[{"name":"Disclosed","at":"2026-11-05T03:17:24.523Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-05T03:17:24.523Z","detail":"CVSS 7.2 · EPSS 0.2%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-05T02:25:17.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-05T02:25:17.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-122318 (important)","text":"github.com/kyverno/kyverno: Kyverno: Image verification bypass via missing Subject Alternative Name in signing certificates","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-122318.json"},{"at":"2026-11-05T03:17:24.523Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-122318 (CVSS 7.2)","text":"Kyverno before 1.19.2 contains an authentication bypass in matchCertificateData that skips verifyImages subject and subjectRegExp checks when the signing certificate has no Subject Alternative Name. Attackers holding a leaf certificate from a configured private trust root can omit the SAN, set the expected Fulcio issuer OID, and sign malicious images that are admitted despite signer pinning.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122318"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-05T03:17:24.523","score":7.2,"severity":"HIGH","desc":"Kyverno before 1.19.2 contains an authentication bypass in matchCertificateData that skips verifyImages subject and subjectRegExp checks when the signing certificate has no Subject Alternative Name. Attackers holding a leaf certificate from a configured private trust root can omit the SAN, set the…","product":"","seen":1793900599849},"kev":null,"epss":{"epss":0.00176,"pct":0.07161,"at":1793967405734},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}