The Ultimate Addons for WPBakery plugin for WordPress contains a stored cross-site scripting vulnerability (CWE-79) in the ultimate_info_table shortcode. Due to inadequate sanitization and escaping of user-supplied attributes, authenticated users with contributor-level permissions or higher can inject arbitrary JavaScript code. This code executes in the context of any user who accesses the compromised page, potentially leading to session hijacking or other script-based attacks. The vulnerability affects all plugin versions up to 3.19.20 and has a CVSS 3.1 base score of 6.4 (medium severity). No patch or official fix has been documented in the provided data.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the ultimate_info_table shortcode. These scripts execute in the browsers of users who view the infected pages, potentially compromising user sessions or performing unauthorized actions within the context of the affected site. The impact is limited to confidentiality and integrity (low-level data exposure or manipulation) without direct availability impact. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level access to trusted users only and consider disabling or removing the ultimate_info_table shortcode if feasible. Monitor official Brainstorm Force communications for updates regarding patches or mitigations.