Kyverno before 1.19.1 ImageValidatingPolicy Exception Bypass
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.
CVE-2026-100704
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-100704
kyverno
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "kyverno",
"product": "kyverno",
"versions": [
{
"status": "affected",
"version": "1.14.0",
"lessThan": "1.19.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "1.19.1",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/kyverno/kyverno",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-100704
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #3142 · Revision 1
- Added to Heist Feed
- Publisher date