Jetpack < 13.9.1 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Disclosure

The Jetpack – WP Security, Backup, Speed, & Growth plugin for WordPress is vulnerable to unauthorized access of data due to missing capability checks in the Contact_Form_Endpoint class in various versions version up to, but not including, 13.9.1. This makes it possible for authenticated attackers, with subscriber-level access and above, to read all Jetpack form submissions on the site.