{"id":"CVE-2026-122306","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-122306","summary":"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.…","details":"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.","published":"2026-11-05T03:17:22.680","modified":"2026-11-05T03:17:22.680","cvss":{"score":7.7,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-8mrj-27wr-599g"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-exponential-time-wildcard-matching"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-05T03:17:22.680"}}