CVE-2026-86490 Missing authorization in YouTrack
Attackers can overwrite bundled applications via the import endpoint due to improper permission checks, potentially leading to code execution.
- 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-2026-86490?
CVE-2026-86490 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 improper permission checks allowed overwriting of bundled apps via the app import endpoint
Weakness: CWE-863
Which versions are affected by CVE-2026-86490?
How do I fix CVE-2026-86490?
No fix has been published for CVE-2026-86490 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-2026-86490 being exploited?
There is no known exploitation of CVE-2026-86490 in the wild and no public exploit code.
Sources
Also known as GHSA-v3fg-v2j9-f7gp.