CVE-2025-53307

Vulnerability

Overview CVE-2025-53307 is a reflected cross-site scripting (XSS) vulnerability in the WordPress Assistant plugin by Beaver Builder, affecting versions up to and including 1.5.2. The root cause is improper neutralization of user-supplied input during web page generation, allowing an attacker to inject arbitrary HTML and JavaScript into the response [1].

Exploitation

Details Exploitation requires a privileged user (e.g., an administrator) to perform an action such as clicking a malicious link, visiting a crafted page, or submitting a form. The attacker does not need authentication but must trick the victim into interacting with the crafted request. This makes the vulnerability suitable for mass-exploit campaigns targeting thousands of websites regardless of size [1].

Impact

Successful exploitation enables the attacker to inject malicious scripts, including redirects, advertisements, and other HTML payloads. These scripts execute in the context of the victim's browser when they visit the affected site, potentially leading to session hijacking, defacement, or further compromise [1].

Mitigation

The vulnerability is fixed in version 1.5.3 of the plugin. Users are strongly advised to update immediately. For those unable to update, Patchstack provides a mitigation rule to block attacks until the patch is applied. Given the moderate severity (CVSS 7.1) and likelihood of exploitation, prompt action is recommended [1].