9Router - Unauthenticated LLM Provider API Exposure

id: CVE-2026-59801

info:
  name: 9Router - Unauthenticated LLM Provider API Exposure
  author: 0x_Akoko
  severity: critical
  description: |
   9Router through version 0.4.41 contains an unauthenticated access vulnerability caused by missing authentication middleware in Next.js API routes under src/app/api/providers/*, letting remote attackers enumerate, create, modify, or delete provider connections, exploit requires no authentication.
  impact: |
   Remote attackers can expose credentials, redirect traffic, or cause denial of service by deleting provider connections.
  remediation: |
   Update to the latest version that includes authentication middleware for API routes.
  reference:
    - https://github.com/decolua/9router/security/advisories/GHSA-vjc7-jrh9-9j86
    - https://nvd.nist.gov/vuln/detail/CVE-2026-59801
  metadata:
    verified: true
    max-request: 2
    product: 9router
    vendor: decolua
    shodan-query: port:20128 http.html:"9Router"
    fofa-query: port="20128" || title="9Router"
  tags: 9router,unauth,api-exposure,misconfig,api-key-leak

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET /api/version HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "currentVersion")'
          - 'compare_versions(lsversion, ">=0.0.1", "<=0.4.41")'
        condition: and
        internal: true

    extractors:
      - type: regex
        name: lsversion
        internal: true
        group: 1
        regex:
          - '"currentVersion"\s*:\s*"([^"]+)"'

  - raw:
      - |
        GET /api/providers HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "application/json")'
          - 'contains_all(body, "authType", "provider", "connections")'
        condition: and
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