GHSA-FCW4-WWQM-M8CF

Vulnerability from github – Published: 2026-06-19 20:51 – Updated: 2026-06-19 20:51
VLAI
Summary
Grafana Operator: Privilege escalation from namespace admin to cluster admin via GrafanaDashboard jsonnetLib fileName
Details

We have released version 5.24.0 of the Grafana Operator. This patch includes a MODERATE severity security fix for a path traversal/privilege escalation vulnerability in the Grafana Operator.

Summary

The Grafana Operator supports loading dashboards & library panels using the jsonnet data templating language. The jsonnet expression is evaluated in the context of the operator manager pod.

Impact

It is possible for a malicious user who can create Dashboard or LibraryPanel resources for a Grafana instance to obtain the Kubernetes service account token of the Grafana Operator manager.

Affected versions

All Grafana Operator versions <= 5.23

Solutions and mitigations

All installations should be upgraded as soon as possible.

As a workaround, the following ValidatingAdmissionPolicy prevent the creation or modification of jsonnet based resources:

apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingAdmissionPolicy
metadata:
  name: "prevent-jsonnet-dashboards"
spec:
  failurePolicy: Fail
  matchConstraints:
    resourceRules:
      - apiGroups: ["grafana.integreatly.org"]
        apiVersions: ["v1beta1"]
        operations: ["CREATE", "UPDATE"]
        resources: ["grafanadashboards", "grafanalibrarypanels"]
  validations:
    - expression: "!has(object.spec.jsonnetLib)"
---
apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingAdmissionPolicyBinding
metadata:
  name: "prevent-jsonnet-dashboards-clusterwide"
spec:
  policyName: "prevent-jsonnet-dashboards"
  validationActions: [Deny]

Acknowledgement

We would like to thank Artem Cherezov for responsibly disclosing the vulnerability.

Severity
6.4 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Show details on source website
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 5.23.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/grafana/grafana-operator/v5"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.24.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/grafana/grafana-operator"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-11769"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-19T20:51:16Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "We have released version 5.24.0 of the Grafana Operator. This patch includes a MODERATE severity security fix for a path traversal/privilege escalation vulnerability in the Grafana Operator.\n\n\n### Summary\n\nThe Grafana Operator supports loading dashboards \u0026 library panels using the jsonnet data templating language. The jsonnet expression is evaluated in the context of the operator manager pod.\n### Impact\n\nIt is possible for a malicious user who can create `Dashboard` or `LibraryPanel` resources for a `Grafana` instance to obtain the Kubernetes service account token of the Grafana Operator manager.\n\n### Affected versions\n\nAll Grafana Operator versions \u003c= 5.23\n\n### Solutions and mitigations\n\nAll installations should be upgraded as soon as possible.\n\nAs a workaround, the following ValidatingAdmissionPolicy prevent the creation or modification of jsonnet based resources:\n```\napiVersion: admissionregistration.k8s.io/v1\nkind: ValidatingAdmissionPolicy\nmetadata:\n  name: \"prevent-jsonnet-dashboards\"\nspec:\n  failurePolicy: Fail\n  matchConstraints:\n    resourceRules:\n      - apiGroups: [\"grafana.integreatly.org\"]\n        apiVersions: [\"v1beta1\"]\n        operations: [\"CREATE\", \"UPDATE\"]\n        resources: [\"grafanadashboards\", \"grafanalibrarypanels\"]\n  validations:\n    - expression: \"!has(object.spec.jsonnetLib)\"\n---\napiVersion: admissionregistration.k8s.io/v1\nkind: ValidatingAdmissionPolicyBinding\nmetadata:\n  name: \"prevent-jsonnet-dashboards-clusterwide\"\nspec:\n  policyName: \"prevent-jsonnet-dashboards\"\n  validationActions: [Deny]\n```\n\n\n### Acknowledgement\n\nWe would like to thank [Artem Cherezov](https://github.com/cherez0ff) for responsibly disclosing the vulnerability.",
  "id": "GHSA-fcw4-wwqm-m8cf",
  "modified": "2026-06-19T20:51:16Z",
  "published": "2026-06-19T20:51:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/grafana/grafana-operator/security/advisories/GHSA-fcw4-wwqm-m8cf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11769"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/grafana/grafana-operator"
    },
    {
      "type": "WEB",
      "url": "https://grafana.com/security/security-advisories/cve-2026-11769"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Grafana Operator: Privilege escalation from namespace admin to cluster admin via GrafanaDashboard jsonnetLib fileName"
}


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