---
id: CVE-2026-100704
title: Kyverno is a policy engine for Kubernetes
summary: >-
  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
  PolicyExc…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N'
cwe:
  - CWE-863
vendor: kyverno
product: kyverno
affected:
  - kyverno >= 1.14.0 < 1.19.1
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T14:16:55.563'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100704'
references:
  - url: 'https://github.com/kyverno/kyverno/security/advisories/GHSA-5cjf-wwfg-pj4c'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/kyverno-before-1.19.1-imagevalidatingpolicy-exception-bypass
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T13:33:20.899Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.