Livemesh Addons for WPBakery Page Builder <= 3.9.4 - Authenticated (Editor+) Stored Cross-Site Scripting

Description

The Livemesh Addons for WPBakery Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.9.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.