Page Builder Sandwich <= 5.1.0 - Missing Authorization to Authenticated(Subscriber+) Arbitrary Post Editing

Description

The Page Builder Sandwich – Front End WordPress Page Builder Plugin plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'gambit_builder_save_content' function in all versions up to, and including, 5.1.0. This makes it possible for authenticated attackers, with subscriber access and above, to insert arbitrary content into existing posts.