{"id":"CVE-2026-122306","published":"2026-11-05T03:17:22.680","lastModified":"2026-11-05T03:17:22.680","description":"Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespaced policy authors to exhaust admission controller CPU by submitting pathological wildcard patterns. Attackers can create a Policy with crafted match and exclude names evaluated by ValidateMatchExcludeConflict, pinning cores and causing cluster-wide webhook timeouts that block resource operations.","cvssScore":7.7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","cwes":["CWE-407"],"vendors":[],"products":[],"references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-8mrj-27wr-599g","tags":[]},{"url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-exponential-time-wildcard-matching","tags":[]}],"exploitRefs":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-8mrj-27wr-599g","tags":[]}],"hasPoc":true,"ai":null}