CVE-2026-100704
highKyverno is a policy engine for Kubernetes.
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/kyverno/kyverno/security/advisories/GHSA-5cjf-wwfg-pj4c disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/kyverno-before-1.19.1-imagevalidatingpolicy-exception... disclosure@vulncheck.com
- https://github.com/kyverno/kyverno/security/advisories/GHSA-5cjf-wwfg-pj4c 134c704f-9b21-4f2e-91b3-4a467353bcc0