CVE-2026-122314

High

Description

Kyverno before 1.19.2 contains an unchecked type assertion in its variable-substitution engine that allows users who can submit resources to crash the policy engine. Attackers can submit resources with non-string fields referenced by {{- variable }} shallow substitution in policies, causing a panic that yields webhook denial of service and policy bypass under failurePolicy Ignore.

SeverityHigh

CVSS7.5

Exploit probability23. percentile0.3%

ProductKyverno

PublishedNov 5, 2026

First seenNov 5, 2026

Weakness typeCWE-248CWE-248

How to fix

Update

kyverno kyverno1.19.2 or later

Vendor advisories

github.com/kyverno/kyverno/security/advisories/GHSA-x4xq-p8g4-6fwg

Affected products

Product	Affected versions	Fixed in
kyverno kyverno	v < 1.19.2	1.19.2

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