CVE-2026-100704: Kyverno

High severity, CVSS 7.7. EPSS: 0.2% chance of exploitation in the next 30 days.

Kyverno is a policy engine for Kubernetes. In versions 1.14.0 through 1.19.0, the ImageValidatingPolicy (policies.kyverno.io/v1beta1) evaluator never reads the spec.images and spec.allowedValues fields of a PolicyException. Any PolicyException whose policyRefs and matchConditions match a resource causes image signature verification to be skipped for the entire resource rather than only for the listed images or values, so an exception intended to exempt a single trusted image exempts every image on the matched resource(s). As a result, unsigned or untrusted images can be admitted to the cluster without signature verification. This differs from ValidatingPolicy, GeneratingPolicy, and MutatingPolicy, which treat the same field as a partial exemption. The issue is fixed in version 1.19.1.

Affected products

• Kyverno Kyverno: from 1.14.0, before 1.19.1 (fixed in 1.19.1)

Published 2026-09-26. Last modified 2026-09-30.