id: CVE-2026-102811

info:
  name: "Marmite Dev Server - Unauthenticated Configuration Disclosure"
  author: vedas-arpsyndicate
  severity: high
  description: |
    Marmite through 0.4.2 ships a development server (started with --serve) whose endpoints
    /__marmite__/content, /__marmite__/config and /__marmite__/file/ require no authentication,
    allowing unauthenticated attackers to read and overwrite site content and configuration
    (and to write outside the project directory via path traversal). A GET to
    /__marmite__/config returns a JSON object with the config file path and its raw YAML
    contents.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-102811&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=marmite&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
    cvss-score: 8.7
    cve-id: CVE-2026-102811
    cwe-id: CWE-306
  metadata:
    verified: false
  tags: cve,cve2026,marmite,exposure
http:
  - raw:
      - |
        GET /__marmite__/config HTTP/1.1
        Host: {{Hostname}}
        Accept: application/json

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "application/json")'
          - 'contains(body, "\"file\"")'
          - 'contains(body, "\"yaml\"")'
        condition: and