WPBakery Page Builder Addons by Livemesh Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the WPBakery Page Builder Addons by Livemesh plugin for WordPress, affecting all versions through 3.8.1. The vulnerability arises from inadequate input sanitization and output escaping on user-supplied attributes, particularly within the 'per_line_mobile' shortcode. This flaw allows authenticated attackers with contributor-level or higher permissions to inject arbitrary scripts into pages, which are executed when users access the compromised page.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Remediation

Users can update to version 3.8.3 or a newer patched version to address this vulnerability.