CVE-2025-39400 HIGH

CVE-2025-39400: WordPress User Registration plugin < 4.2.0 - Reflected Cross Site Scripting (XSS) vulnerability

Vendor Wpeverest
Product User Registration
Weakness CWE-79 · XSS
Published April 24, 2025
Last update April 28, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpeverest User Registration user-registration allows Reflected XSS.This issue affects User Registration: from n/a through < 4.2.0.

Explanation of Vulnerability in Simple Terms

02Summary

User Registration versions 4.2.0 and earlier contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts. An attacker can craft a malicious link or page that, when visited by a site user, executes arbitrary JavaScript in the victim's browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.

What an attacker can do

03Attacker Capabilities

Inject and execute malicious JavaScript in users' browsers to steal sessions, credentials, or perform unauthorized actions.

Potential impact on your site

04Site Impact

Site users visiting malicious links could have their sessions hijacked or credentials stolen; attackers can perform actions as those users.

Conditions required to exploit

05Prerequisites

Attacker must trick a site user into clicking a malicious link or visiting a compromised page (user interaction required).

Key dates

06Disclosure timeline

April 24, 2025 CVE published
April 28, 2026 Record updated