id: CVE-2026-59148

info:
  name: "Mockoon - Unauthenticated Admin API Exposure"
  author: vedas-arpsyndicate
  severity: high
  description: |
    Mockoon prior to 9.7.0 mounts its admin API on the same Express listener as the user-defined mock
    routes, enabled by default in shipped runtimes, and enforces no authentication. Any unauthenticated
    caller that can reach the mock server port can access the /mockoon-admin endpoints to read and write
    MOCKOON_* process environment variables (/mockoon-admin/env-vars), rewrite mock route bodies, statuses
    and headers (PUT /mockoon-admin/environment), read transaction logs and SSE streams, and purge state.
    The admin API root (GET /mockoon-admin) returns a distinctive welcome banner without credentials, which
    confirms the admin API is reachable unauthenticated. Fixed in 9.7.0, which adds a bearer-token guard.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-59148&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=mockoon&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    cvss-score: 8.8
    cve-id: CVE-2026-59148
    cwe-id: CWE-306
  metadata:
    verified: false
    max-request: 1
  tags: cve,cve2026,mockoon,exposure,auth-bypass,unauth

http:
  - method: GET
    path:
      - "{{BaseURL}}/mockoon-admin"
    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "Welcome to Mockoon's admin API"
      - type: status
        status:
          - 200