AWeber < 7.3.10 - Missing Authorization via AJAX actions

Description

The AWeber – Free Sign Up Form and Landing Page Builder Plugin for Lead Generation and Email Newsletter Growth plugin for WordPress is vulnerable to unauthorized access and modification of data due to a missing capability check on several functions hooked by AJAX actions in all versions up to, and including, 7.3.9. This makes it possible for subscribers and higher to create and publish pages and modify landing pages.