high · CVSS v3 6.2 · CVSS v4 8.2

CVE-2026-122309

Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespace-scoped policy authors to exhaust …

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.

Scores

Severity
high
CVSS v2
6.1
CVSS v3
6.2
CVSS v4
8.2
EPSS
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