The Total Upkeep plugin for WordPress is vulnerable to information disclosure in versions up to, and including 1.14.13. This is due to missing authorization on the heartbeat_received() function that triggers on WordPress heartbeat. This makes it possible for authenticated attackers, with subscriber-level permissions and above to retrieve back-up paths that can subsequently be used to download the back-up.
https://www.wordfence.com/threat-intel/vulnerabilities/id/0e346146-1c00-4e03-a6c7-372566d7ffc9