UserHashedTableAuth in JetBrains Ktor framework before 1.2.0-rc uses a One-Way Hash with a Predictable Salt for storing user credentials.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-4326
https://blog.jetbrains.com/blog/2019/09/26/jetbrains-security-bulletin-q2-2019/