CVE-2026-100257 Server-side request forgery in YouTrack
Attackers can perform Server-Side Request Forgery via stored XHTML injection during PDF export 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-2026-100257?
CVE-2026-100257 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 2026.2.18991 sSRF via stored XHTML injection was possible during PDF export
Weakness: CWE-918
Which versions are affected by CVE-2026-100257?
It affects 1 product.
Products include Jetbrains Youtrack.
How do I fix CVE-2026-100257?
No fix has been published for CVE-2026-100257 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-2026-100257 being exploited?
There is no known exploitation of CVE-2026-100257 in the wild and no public exploit code.
Other vulnerabilities in Jetbrains Youtrack
Sources
Also known as GHSA-cr25-22xp-44g2.