CVE-2026-100274: JetBrains Youtrack

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

In JetBrains YouTrack before 2026.2.19197 project Admin could trigger DoS via a notification template

Affected products

• JetBrains Youtrack: before 2026.2.19197 (fixed in 2026.2.19197)

Published 2026-09-30. Last modified 2026-10-02.