Kyverno before 1.19.1 Cross-Namespace Data Access via globalcontext.Lib
Kyverno 1.16.0 through 1.19.0 registers the globalcontext.Lib CEL library in its policy environment without confining it to the policy's namespace, unlike the sibling libraries (resource.Lib, http.Lib, configMap loader) which are handed the policy namespace. A tenant who can create a namespaced policy (e.g. NamespacedValidatingPolicy, and likewise the namespaced mutating, deleting, generating, and image-validating policy kinds) in their own namespace can call globalContext.get("", "") and receive the full cached contents of a cluster-scoped GlobalContextEntry, including data cached from namespaces the tenant has no RBAC permission to read. No admission validation rejects such calls. Fixed in 1.19.1.
CVE-2026-100703
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-2026-100703
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": "1.16.0",
"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-2026-100703
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #3257 · Revision 1
- Added to Heist Feed
- Publisher date