CVE-2026-100260 Auth bypass in YouTrack
Attackers can bypass authentication after a password reset in JetBrains YouTrack, potentially taking over user accounts.
- 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-2026-100260?
CVE-2026-100260 is a medium-severity authentication bypass 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 2026.2.18991 mailbox integration allowed authentication after a password reset
Weakness: CWE-1188
Which versions are affected by CVE-2026-100260?
It affects 1 product.
Products include Jetbrains Youtrack.
How do I fix CVE-2026-100260?
No fix has been published for CVE-2026-100260 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-100260 being exploited?
There is no known exploitation of CVE-2026-100260 in the wild and no public exploit code.
Other vulnerabilities in Jetbrains Youtrack
Sources
Also known as GHSA-m4m6-2637-vqmm.