CVE-2026-100280 Missing authorization in YouTrack

Low 3.1 Published 30 Sep 2026 Updated 30 Sep 2026

Attackers can create projects from unreadable custom templates, bypassing intended access restrictions in JetBrains YouTrack.

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-2026-100280?

CVE-2026-100280 is a low-severity missing authorization vulnerability in Jetbrains Youtrack, published on 30 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In JetBrains YouTrack before 2026.2.19197 creating a project from an unreadable custom template was possible

Weakness: CWE-862

Which versions are affected by CVE-2026-100280?

It affects 1 product.

Products include Jetbrains Youtrack.

How do I fix CVE-2026-100280?

No fix has been published for CVE-2026-100280 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-2026-100280 being exploited?

There is no known exploitation of CVE-2026-100280 in the wild and no public exploit code.

All Jetbrains Youtrack vulnerabilities

Sources

Also known as GHSA-c24x-c9x2-w759.