CVE-2026-86479: JetBrains Youtrack

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

In JetBrains YouTrack before 2026.2.18788, 2026.1.14055, 2025.3.161254 missing authorisation allowed access to restricted REST API resources via IDOR

Affected products

• JetBrains Youtrack

Published 2026-09-07. Last modified 2026-09-09.