CVE-2026-86489 Missing authorization in YouTrack
An IDOR vulnerability in the user profile API allows attackers to access private issues and starred folders across organizations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86489?
CVE-2026-86489 is a medium-severity missing authorization vulnerability in JetBrains YouTrack, published on 7 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In JetBrains YouTrack before 2026.2.18634 an IDOR in the user profile API disclosed private issues and starred folders across organizations
Weakness: CWE-639
Which versions are affected by CVE-2026-86489?
How do I fix CVE-2026-86489?
No fix has been published for CVE-2026-86489 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-86489 being exploited?
There is no known exploitation of CVE-2026-86489 in the wild and no public exploit code.
Sources
Also known as GHSA-346h-5p4g-633v.