Mega Addons For WPBakery Page Builder < 4.3.0 - Contributor+ Stored XSS

The Mega Addons For WPBakery Page Builder WordPress plugin before 4.3.0 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.