Secure MySQL connections (from Plesk to externally hosted databases)
Secure MySQL connections via SSL/TLS: it is only a number of small changes in the code and a huge step in decreasing the attack surface.
This functionality was added in Plesk 18.0.52 ( https://docs.plesk.com/release-notes/obsidian/change-log/#plesk-18052 ). We suggest you to update to Plesk 18.0.52 and check it out.
You can find additional information in https://docs.plesk.com/current/administrator-guide/database-servers/securing-connections-to-remote-mysql-database-servers.80017/. Let us know if you have any feedback - visit our forum at http://talk.plesk.com.
It could be a great security and versatility improvement.
Paul Hermans commented
This could be the same SSL certificate used to protect Plesk and the Mail server, possibly a Let's Encrypt certifcate.
Certificate for securing Plesk
Certificate for securing mail
Certificate for securing MySQL
Especially with the shift to cloud-hosted instances of MySQL, this should be high up on the list of things to get added