CVE-2026-100279 Server-side request forgery in YouTrack
Attackers can expose stored credentials by changing integration URLs in JetBrains YouTrack, requiring an upgrade to secure the application.
- 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-2026-100279?
CVE-2026-100279 is a medium-severity server-side request forgery 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 changing an integration URL exposed its stored credentials
Weakness: CWE-918
Which versions are affected by CVE-2026-100279?
It affects 1 product.
Products include Jetbrains Youtrack.
How do I fix CVE-2026-100279?
No fix has been published for CVE-2026-100279 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-100279 being exploited?
There is no known exploitation of CVE-2026-100279 in the wild and no public exploit code.
Other vulnerabilities in Jetbrains Youtrack
Sources
Also known as GHSA-mjhv-q7ff-v638.