CVE-2026-100262: JetBrains Youtrack

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

In JetBrains YouTrack before 2026.2.18991 missing authorisation allowed users with read-only project access to overwrite project notification templates

Affected products

• JetBrains Youtrack: before 2026.2.18991 (fixed in 2026.2.18991)

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