CVE-2026-122305
HIGH
NVD
CVSS Score
7.7
Severity
HIGH
Published
Nov 05, 2026
Vendor
unknown
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.