{"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-2026-122306","cwes":["CWE-407"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.3,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","version":"4.0"},{"score":7.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793845510219,"publishedAt":1793845510219,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-8mrj-27wr-599g"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-exponential-time-wildcard-matching"}],"remediation":[],"revision":"4484b6770ef57c633f179dce78f5fdbf5e4554226b145ab477813195a68a11bf","sources":[{"modifiedAt":1793845510219,"name":"CNA: VulnCheck","retrievedAt":1793848157752,"url":"https://www.cve.org/CVERecord?id=CVE-2026-122306"}],"ssvc":null,"status":"published","title":"Kyverno before 1.19.2 Denial of Service via Exponential-Time Wildcard Matching","updatedAt":1793848157752}