JetBrains YouTrack Cross-Site Scripting Vulnerability (CNVD-2022-20143)

JetBrains YouTrack is a browser-based bug tracking and project management software from JetBrains Czech Republic. A cross-site scripting vulnerability exists in versions prior to JetBrains YouTrack 2021.4.31698, which stems from a lack of data validation filtering of user-supplied data and output on the Notification templates page, which could be exploited to execute JavaScript code on the client-side execution of JavaScript code.