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JetBrains YouTrack Stored Cross-Site Scripting Vulnerability via Mermaid Diagram Content

Vulnerability

A stored cross-site scripting vulnerability has been identified in JetBrains YouTrack versions prior to 2025.2.92387. This issue allows the injection of malicious scripts through Mermaid diagram content, which is then executed when the diagram is viewed.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the affected content.

Remediation

Users can upgrade to JetBrains YouTrack version 2025.2.92387 or later to address this vulnerability.

Added: Aug 20, 2025, 10:21 AM
Updated: Aug 20, 2025, 10:21 AM

Vulnerability Rating

Custom Algorithm
spread
5.0
impact
1.0
exploitability
5.0
remediation
7.7
relevance
0.4
threat
0.0
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.