ACF On-The-Go <= 1.0.1 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Content Update

The ACF On-The-Go plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the acfg_update_fields() function in all versions up to, and including, 1.0.1. This makes it possible for authenticated attackers, with subscriber-level access and above, to update arbitrary post titles, descriptions, and ACF values.