JetBrains TeamCity before 2021.2 was vulnerable to a Time-of-check/Time-of-use (TOCTOU) race-condition attack in agent registration via XML-RPC.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-29232
https://blog.jetbrains.com/blog/2022/02/08/jetbrains-security-bulletin-q4-2021/