CVE-2026-122309
MEDIUM
NVD
CVSS Score
6.2
Severity
MEDIUM
Published
Nov 05, 2026
Vendor
unknown
Description
Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespace-scoped policy authors to exhaust CPU and memory by submitting CEL expressions evaluated without runtime cost limits. Attackers can create a NamespacedValidatingPolicy or NamespacedDeletingPolicy with nested map comprehensions over large ConfigMap fields to OOM-kill Kyverno pods and block cluster-wide admission.