In JetBrains Hub versions earlier than 2018.4.11298, the audit events for SMTPSettings show a cleartext password to the admin user. It is only relevant in cases where a password has not changed since 2017, and if the audit log still contains events from before that period.
https://blog.jetbrains.com/blog/2019/06/19/jetbrains-security-bulletin-q1-2019/