In JetBrains Code With Me before 2020.3, an attacker on the local network, knowing a session ID, could get access to the encrypted traffic.
https://jay-from-future.github.io/cve/2021/04/02/code-with-me-cve.html
https://blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020/