CVE-2025-23490

CVE-2025-23490 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the Browser-Update-Notify WordPress plugin developed by Michael Stursberg. The flaw affects the browser-update-notify component in all versions from n/a through 0.2.1 inclusive. Published on 2025-03-03, it carries a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), indicating high severity due to network accessibility and scope change.

Attackers can exploit this vulnerability remotely over the network with low attack complexity and no required privileges, though it necessitates user interaction such as clicking a malicious link. Exploitation delivers a reflected XSS payload, enabling arbitrary JavaScript execution in the victim's browser context within the affected WordPress site. This can result in low-level impacts on confidentiality, integrity, and availability, such as session hijacking or data theft from the user.

The Patchstack advisory provides details on this WordPress plugin vulnerability, including potential mitigation and patch information, accessible at https://patchstack.com/database/Wordpress/Plugin/browser-update-notify/vulnerability/wordpress-browser-update-notify-plugin-0-2-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.