CVE-2026-123850
Low
Description
In JetBrains YouTrack before 2026.2.19422 cSS injection was possible in Mermaid diagrams via configuration directives
SeverityLow
CVSS3.5
Exploit probability—
Product
YouTrack
PublishedNov 6, 2026
First seenNov 6, 2026
Weakness typeCWE-1021CWE-1021
How to fix
Update
- JetBrains YouTrack2026.2.19422 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| JetBrains YouTrack | v < 2026.2.19422 | 2026.2.19422 |
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