{"id":"CVE-2026-122305","published":"2026-11-05T03:17:22.527","lastModified":"2026-11-05T03:17:22.527","description":"Kyverno before 1.19.2 contains a denial of service vulnerability in substituteVariablesIfAny that allows low-privileged users to hang the admission webhook via self-referential variable templates. Attackers can create resources whose annotations re-introduce the embedded policy variable, causing unbounded substitution loops that exhaust CPU and memory and block cluster-wide admission.","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-835"],"vendors":[],"products":[],"references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-338x-hgrv-626h","tags":[]},{"url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-nested-variable-substitution-loop","tags":[]}],"exploitRefs":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-338x-hgrv-626h","tags":[]}],"hasPoc":true,"ai":null}