Backup and Staging by WP Time Capsule < 1.22.28 - Subscriber+ Staging-to-Live Deployment via wptc_copy_stage_to_live

The Backup and Staging by WP Time Capsule WordPress plugin before 1.22.28 does not perform capability or nonce checks on the handler that deploys a staging site to the live site, allowing any authenticated user with a Subscriber account on a WP Time Capsule staging site to overwrite the separate live site's database and configuration and take it offline.