In JetBrains TeamCity before 2023.05.1 reflected XSS via the Referer header was possible during artifact downloads

In JetBrains TeamCity before 2023.05.1 stored XSS while viewing the build log was possible

In JetBrains TeamCity before 2023.05.1 build chain parameters of the "password" type could be written to the agent log

In JetBrains TeamCity before 2023.05.1 stored XSS while running custom builds was possible

In JetBrains TeamCity before 2023.05.1 parameters of the "password" type could be shown in the UI in certain composite build configurations

In JetBrains TeamCity before 2023.05.1 stored XSS when using a custom theme was possible

JetBrains TeamCity 8 and 9 before 9.0.2 allows bypass of account-creation restrictions via a crafted request because the required request data can be deduced by reading HTML and JavaScript files that are returned to the web browser after an initial unauthenticated request.

In JetBrains TeamCity before 2023.05 stored XSS in GitLab Connection page was possible

In JetBrains TeamCity before 2023.05 authentication checks were missing – 2FA was not checked for some sensitive account actions

In JetBrains TeamCity before 2023.05 a specific endpoint was vulnerable to brute force attacks