What the vulnerability does
01Description
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'gdpr_communication_preferences[]' parameter in all versions up to, and including, 3.14.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when the GDPR Communication Preferences module is enabled and at least one GDPR Communication Preferences field has been added to the edit profile form.
Explanation of Vulnerability in Simple Terms
02Summary
User Profile Builder versions 3.14.3 and earlier contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site users, including administrators. The vulnerability affects the entire site scope due to how the plugin processes and displays user-supplied data without proper sanitization.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers, potentially stealing session tokens or admin credentials.
Potential impact on your site
04Site Impact
Authenticated users can compromise admin accounts and take control of your site without additional clicks from victims.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site; no user interaction required from victims.
Key dates
06Disclosure timeline
August 16, 2025
CVE published
April 8, 2026
Record updated
