Stored Cross-Site Scripting in User Registration Plugin for WordPress
CVE-2025-6831

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
User Registration & Membership – Custom Registration Form Builder, Custom Login Form, User Profile, Content Restriction & Membership Plugin
Vendor
CVE Published:
22 July 2025

What is CVE-2025-6831?

The User Registration plugin for WordPress is susceptible to Stored Cross-Site Scripting (XSS) via the plugin's urcr_restrict shortcode. This vulnerability arises from inadequate input sanitization and output escaping on user-supplied attributes, impacting all versions up to and including 4.2.4. Authenticated attackers with contributor-level access or higher could exploit this flaw to inject arbitrary web scripts into pages that execute whenever another user accesses those injected pages.

Affected Version(s)

User Registration & Membership – Custom Registration Form Builder, Custom Login Form, User Profile, Content Restriction & Membership Plugin * <= 4.2.4

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/user-registrat...
https://plugins.trac.wordpress.org/browser/user-registrat...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

muhammad yudha
.
CVE-2025-6831 : Stored Cross-Site Scripting in User Registration Plugin for WordPress