The Newsletter2Go plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘style’ parameter in all versions up to, and including, 4.0.14 due to insufficient input sanitization and output escaping.
The Newsletter2Go plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'resetStyles' AJAX action in all versions up to, and including, 4.0.14.