The Ultimate Addons for WPBakery plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of input in the ultimate_pricing shortcode. This allows authenticated users with contributor or higher privileges to inject arbitrary JavaScript code into pages. The injected scripts execute in the context of any user viewing the compromised page, potentially leading to session hijacking or other malicious actions. The vulnerability affects all plugin versions up to 3.19.20. No official patch or remediation guidance has been provided yet.

An attacker with contributor-level or higher access can exploit this vulnerability to inject persistent malicious scripts into WordPress pages. These scripts execute in the browsers of users who visit the infected pages, potentially leading to information disclosure or session hijacking. The vulnerability does not impact availability and requires authenticated access, limiting its scope. The CVSS 3.1 base score is 6.4 (medium severity), reflecting network attack vector, low attack complexity, and privileges required.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict contributor-level access to trusted users only and consider disabling or limiting use of the ultimate_pricing shortcode. Monitor official Brainstorm Force communications for updates and apply patches promptly once released.