HIGH 8.3 NVD
CVE-2026-122306
Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespaced policy authors to exhaust admission controller CPU by submitting patholo
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.
References
- https://github.com/kyverno/kyverno/security/advisories/GHSA-8mrj-27wr-599g
- https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-exponenti
This high severity vulnerability with a CVSS score of 8.3 was published on 2026-11-05 via NVD.
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