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Kyverno before 1.19.1 Cross-Namespace Data Access via globalcontext.Lib

Type: advisorySource: OSV1 source record

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.

Announced Source revision 1
Original source ↗

BIT-kyverno-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: osv:BIT-kyverno-2026-100703

kyverno

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
1.19.1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "1.16.0"
          },
          {
            "fixed": "1.19.1"
          }
        ]
      }
    ],
    "package": {
      "name": "kyverno",
      "purl": "pkg:bitnami/kyverno",
      "ecosystem": "Bitnami"
    },
    "severity": [
      {
        "type": "CVSS_V4",
        "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
      }
    ],
    "database_specific": {
      "source": "https://github.com/bitnami/vulndb/tree/main/data/kyverno/BIT-kyverno-2026-100703.json"
    }
  }
]
Related CVEs
CVE-2026-100703

Source reference: /aliases

Publisher severity

high

Source reference: /database_specific/severity

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-100703 · High

kyverno

Event
#59601 · Revision 1
Added to Heist Feed
Publisher date
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