JetBrains YouTrack before 2021.4.36872 was vulnerable to stored XSS via a project icon.

In JetBrains IntelliJ IDEA before 2021.3.1, local code execution via RLO (Right-to-Left Override) characters was possible.

In JetBrains IntelliJ IDEA before 2021.2.4, local code execution (without permission from a user) upon opening a project was possible.

JetBrains YouTrack before 2021.4.31698 was vulnerable to stored XSS on the Notification templates page.

In JetBrains YouTrack before 2021.4.31698, a custom logo could be set by a user who has read-only permissions.

In JetBrains TeamCity before 2021.2.1, URL injection leading to CSRF was possible.

In JetBrains TeamCity before 2021.2.1, editing a user account to change its password didn't terminate sessions of the edited user.

In JetBrains TeamCity before 2021.2.1, XXE during the parsing of the configuration file was possible.

JetBrains TeamCity before 2021.2.1 was vulnerable to stored XSS.

JetBrains TeamCity before 2021.2.1 was vulnerable to reflected XSS.

In JetBrains TeamCity before 2021.2, health items of pull requests were shown to users who lacked appropriate permissions.

In JetBrains TeamCity before 2021.2.1, an unauthenticated attacker can cancel running builds via an XML-RPC request to the TeamCity server.

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.

In JetBrains TeamCity before 2021.2.1, the Agent Push feature allowed selection of any private key on the server.

In JetBrains TeamCity before 2021.2, blind SSRF via an XML-RPC call was possible.

In JetBrains TeamCity before 2021.2, a logout action didn't remove a Remember Me cookie.

In JetBrains TeamCity before 2021.1.4, GitLab authentication impersonation was possible.

In JetBrains TeamCity before 2021.2.1, a redirection to an external site was possible.

kotlin: Not possible to lock dependencies for Multiplatform Gradle Projects

In JetBrains Kotlin before 1.6.0, it was not possible to lock dependencies for Multiplatform Gradle Projects.

In JetBrains Hub before 2021.1.13956, an unprivileged user could perform DoS.