In JetBrains YouTrack before 2026.1.13903, 2026.2.17950 an authenticated user could read restricted articles from other projects via the draft creation endpoint

In JetBrains YouTrack before 2026.2.18177 doS attack was possible via a decompression bomb in the import endpoint

In JetBrains YouTrack before 2026.2.18112 an authenticated user could enumerate accounts via the users search endpoint

In JetBrains YouTrack before 2026.2.18634 angularJS template injection in assignee names led to stored XSS

In JetBrains YouTrack before 2026.2.18634 stored XSS via a custom field on Agile board cards was possible

In JetBrains YouTrack before 2026.2.18634 signed URL reuse allowed disclosure of restricted project icons

In JetBrains YouTrack before 2026.2.18634 improper permission checks allowed overwriting of bundled apps via the app import endpoint

In JetBrains YouTrack before 2026.2.18634 iDOR via the watchRules and issueListConfig endpoints exposed private saved searches

In JetBrains YouTrack before 2026.2.18687 missing permission checks allowed creating knowledge base articles in inaccessible projects

In JetBrains YouTrack before 2026.2.18634 an IDOR in the user profile API disclosed private issues and starred folders across organizations

In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without re-authentication allowed a project administrator to exfiltrate stored mailbox credentials

In JetBrains YouTrack before 2026.1.14047 predefined search fields leaked all group names to any user, regardless of visibility permission

In JetBrains YouTrack before 2026.2.18769 missing access control on Helpdesk authorized reporters exposed reporter email addresses

In JetBrains YouTrack before 2026.1.14047 a missing escalation check let a user with project update permissions grant themselves Project Admin

In JetBrains YouTrack before 2026.2.18634 improper permission checks allowed read-only users to create and modify whiteboard cards

In JetBrains YouTrack before 2026.1.13162 information disclosure was possible on Users and Groups pages

In JetBrains YouTrack before 2026.1.13570 improper access control allowed low-privileged users to modify service accounts

In JetBrains YouTrack before 2026.1.13570 improper access control allowed enumeration of restricted issues and articles on Planning Canvas

In JetBrains YouTrack before 2026.2.17394 stored XSS via article titles in digest emails was possible

In JetBrains YouTrack before 2026.2.16593 project settings disclosure via the MCP was possible

In JetBrains YouTrack before 2026.2.16593 default role configuration exposed excessive user profile details

In JetBrains YouTrack before 2026.2.16593 improper access control allowed reading saved queries and tags

In JetBrains YouTrack before 2023.3.22666 stored XSS via markdown was possible

In JetBrains YouTrack before 2023.1.10518 stored XSS in a Markdown-rendering engine was possible

In JetBrains YouTrack before 2021.3.21051, a user could see boards without having corresponding permissions.

In JetBrains YouTrack before 2021.2.17925, stored XSS was possible.

In JetBrains YouTrack before 2021.2.16363, system user passwords were hashed with SHA-256.

In JetBrains YouTrack before 2019.2.59309, SMTP/Jabber settings could be accessed using backups.

JetBrains YouTrack 2019.2 before 2019.2.59309 was vulnerable to XSS via an issue description.

In JetBrains YouTrack before 2025.3.119033 access tokens could be exposed in Mailbox logs