CVE-2026-100276 Missing authorization in YouTrack
Guest users can bypass visibility restrictions to execute workflow actions in JetBrains YouTrack, potentially escalating privileges or bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-100276?
CVE-2026-100276 is a medium-severity missing authorization vulnerability in Jetbrains Youtrack, published on 30 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In JetBrains YouTrack before 2026.2.19197 guest users could remove a workflow action's visibility restriction and run the action
Weakness: CWE-863
Which versions are affected by CVE-2026-100276?
It affects 1 product.
Products include Jetbrains Youtrack.
How do I fix CVE-2026-100276?
No fix has been published for CVE-2026-100276 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-2026-100276 being exploited?
There is no known exploitation of CVE-2026-100276 in the wild and no public exploit code.
Other vulnerabilities in Jetbrains Youtrack
Sources
Also known as GHSA-g6f7-qwx3-3rvr.