CVE-2026-100704

HIGH 7.7

Kyverno before 1.19.1 ImageValidatingPolicy Exception Bypass

CVSS Score

7.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	kyverno
Product	kyverno
Published	Sep 26, 2026

Stay Ahead of the Next One

Get instant alerts for kyverno kyverno

Be the first to know when new high vulnerabilities affecting kyverno kyverno are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

kyverno / kyverno

1.14.0 < 1.19.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/kyverno/kyverno/security/advisories/GHSA-5cjf-wwfg-pj4c vulncheck.com: https://www.vulncheck.com/advisories/kyverno-before-1.19.1-imagevalidatingpolicy-exception-bypass

Credits

🔍 zanarellidev