{"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-2026-122305","cwes":["CWE-835"],"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.","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":1793845509571,"publishedAt":1793845509571,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-338x-hgrv-626h"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-nested-variable-substitution-loop"}],"remediation":[],"revision":"97e9f401f910d04d735c440cb911bb078c8d83533570a7ba28a337e384b42ae3","sources":[{"modifiedAt":1793845509571,"name":"CNA: VulnCheck","retrievedAt":1793848156617,"url":"https://www.cve.org/CVERecord?id=CVE-2026-122305"}],"ssvc":null,"status":"published","title":"Kyverno before 1.19.2 Denial of Service via Nested Variable Substitution Loop","updatedAt":1793848156617}