CVE-2026-103496: JetBrains Youtrack

Medium severity, CVSS 5.4. EPSS: 0.1% chance of exploitation in the next 30 days.

In JetBrains YouTrack before 2026.2.19422 iDOR in inbox threads allowed reading other users' notifications

Affected products

• JetBrains Youtrack: before 2026.2.19422 (fixed in 2026.2.19422)

Published 2026-10-01. Last modified 2026-10-01.