Information disclosure in the TeamCity plugin for IntelliJ before 2020.2.2.85899 was possible because a local temporary file had Insecure Permissions.

In JetBrains TeamCity before 2020.2.1, permissions during user deletion were checked improperly.

In JetBrains TeamCity before 2020.2.1, permissions during token removal were checked improperly.

In JetBrains TeamCity before 2020.2, an ECR token could be exposed in a build's parameters.

In JetBrains TeamCity before 2020.2.1, the server admin could create and see access tokens for any other users.

In JetBrains TeamCity before 2020.2.1, a user could get access to the GitHub access token of another user.

JetBrains TeamCity before 2020.2 was vulnerable to reflected XSS on several pages.

In JetBrains TeamCity before 2020.2.2, TeamCity server DoS was possible via server integration.

In JetBrains YouTrack before 2020.6.1099, project information could be potentially disclosed.

In JetBrains YouTrack before 2020.5.3123, server-side template injection (SSTI) was possible, which could lead to code execution.

In JetBrains YouTrack before 2020.4.6808, the YouTrack administrator wasn't able to access attachments.

In JetBrains YouTrack before 2020.4.4701, permissions for attachments actions were checked improperly.

In JetBrains YouTrack before 2020.6.1767, an issue's existence could be disclosed via YouTrack command execution.

In JetBrains YouTrack before 2020.4.4701, improper resource access checks were made.

In JetBrains YouTrack before 2020.4.4701, CSRF via attachment upload was possible.

In JetBrains PhpStorm before 2020.3, source code could be added to debug logs.

In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.

In JetBrains Ktor before 1.4.3, HTTP Request Smuggling was possible.

In JetBrains Ktor before 1.5.0, a birthday attack on SessionStorage key was possible.

In JetBrains Hub before 2020.1.12669, information disclosure via the public API was possible.