What the vulnerability does
01Description
The User Registration – Custom Registration Form, Login Form, and User Profile WordPress Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Display Name' parameter in all versions up to, and including, 3.1.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability requires social engineering to successfully exploit, and the impact would be very limited due to the attacker requiring a user to login as the user with the injected payload for execution.
Explanation of Vulnerability in Simple Terms
02Summary
A stored cross-site scripting (XSS) vulnerability exists in User Registration & Membership plugin versions up to 3.1.4. An attacker can inject malicious scripts into user-controllable fields that are later displayed to other users or administrators. The vulnerability requires user interaction (victim must visit a page containing the injected content) and affects the integrity and confidentiality of site data.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers when they view affected pages.
Potential impact on your site
04Site Impact
User accounts and admin sessions could be compromised; attackers can steal session tokens or redirect users to phishing sites.
Conditions required to exploit
05Prerequisites
No authentication required. Victim must visit a page containing the attacker's injected payload.
Key dates
06Disclosure timeline
March 7, 2024
CVE published
April 8, 2026
Record updated
