CVE-2025-23578

CVE-2025-23578 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the Custom CSS Addons WordPress plugin (css-addons) developed by Bastien Ho. The issue affects all versions from n/a through 1.9.1. Published on 2025-01-22T15:15:17.687, 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).

Attackers can exploit this vulnerability remotely over the network with low complexity and no required privileges, though it demands user interaction such as clicking a malicious link. A successful Reflected XSS attack allows execution of arbitrary scripts in the context of the targeted user's browser, potentially enabling low-level impacts on confidentiality, integrity, and availability, with a changed scope due to the cross-origin effects.

The Patchstack advisory provides details on this WordPress plugin vulnerability, including mitigation guidance, at https://patchstack.com/database/Wordpress/Plugin/css-addons/vulnerability/wordpress-custom-css-addons-plugin-1-9-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.