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CVE WatchNov 5, 2026

CVE-2026-122305

Kyverno before 1.19.2 contains a denial of service vulnerability in substituteVariablesIfAny that allows low-privileged users to hang the ad

CVSS

7.7

High

EPSS

0.3%

p23

KEV

—

Exploit Today

7

0-100

Published: Nov 5, 2026 · Last modified: Nov 5, 2026 · CWE-835

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references
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