beszel-unfinished-installation: Beszel Unfinished Installation

2026-01-24 Beszel Unfinished Installation PoC Public

Description

Detected Beszel server monitoring hub had an unfinished installation with no admin account configured, allowing attackers to create an admin account and gain full control.

PoC

id: beszel-unfinished-installation

info:
  name: Beszel Unfinished Installation
  author: 0x_Akoko
  severity: high
  description: |
    Detected Beszel server monitoring hub had an unfinished installation with no admin account configured, allowing attackers to create an admin account and gain full control.
  reference:
    - https://github.com/henrygd/beszel
  metadata:
    verified: true
    max-request: 1
    shodan-query: html:"globalThis.BESZEL"
    fofa-query: body="globalThis.BESZEL"
  tags: beszel,misconfig,install,exposure,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/api/beszel/first-run"

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "application/json")'
          - 'contains(body, "\"firstRun\":true")'
        condition: and
# digest: 4a0a0047304502206a78e042c4877d8f27831d80292632bead209369c9e9616e2c864904f191307b022100c2986dc8c57d36c83b352643d4a04857671a97c305b4590925fe1275e559ec55:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.

References

Related Vulnerabilities