YouTrack <2026.2.17012: CSS Injection via Mermaid Diagram
CVE-2026-59791 Published on July 10, 2026
In JetBrains YouTrack before 2026.2.17012 cSS injection via Mermaid diagram rendering was possible
Vulnerability Analysis
CVE-2026-59791 can be exploited with network access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is a Clickjacking Vulnerability?
The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain, which can lead to user confusion about which interface the user is interacting with. A web application is expected to place restrictions on whether it is allowed to be rendered within frames, iframes, objects, embed or applet elements. Without the restrictions, users can be tricked into interacting with the application when they were not intending to.
CVE-2026-59791 has been classified to as a Clickjacking vulnerability or weakness.
Products Associated with CVE-2026-59791
Want to know whenever a new CVE is published for JetBrains Youtrack? stack.watch will email you.
Affected Versions
JetBrains YouTrack:- Before 2026.2.17012 is affected.