CVE-2025-39488

Vulnerability

Overview

The MagOne theme for WordPress, versions 8.8 and earlier, contains a reflected cross-site scripting (XSS) vulnerability due to improper neutralization of user input during web page generation [1]. This issue allows an attacker to inject arbitrary HTML or JavaScript into a web page’s output, potentially leading to malicious script execution in the victim’s browser.

Attack

Vector and Requirements

Exploitation requires user interaction—a privileged user (e.g., an administrator) must click a crafted link, submit a specially designed form, or visit a malicious page [1]. No authentication is needed from the attacker, making the flaw accessible to anyone who can trick a site user into performing the action. The reflection occurs when the injected payload is immediately echoed back in the server’s response without proper escaping.

Potential

Impact

Successful exploitation could allow an attacker to perform actions such as redirecting visitors to malicious sites, injecting unwanted advertisements, or stealing session cookies [1]. Since the attack can be carried out without any prior access, it poses a risk to site integrity and visitor trust, especially if used in mass-exploit campaigns targeting multiple websites simultaneously.

Mitigation and

Remediation

The vendor has addressed this vulnerability in version 8.9 of the MagOne theme [1]. Users are strongly advised to update to version 8.9 or later. Those who cannot update immediately should consider applying a Web Application Firewall (WAF) rule or consulting their hosting provider for temporary mitigation until the patch can be applied [1].