Missing Authorization in YouTrack - CVE-2026-103490
Published: October 2, 2026
Vulnerability identifier: #VU153161
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-103490
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to missing authorization in user group links when manipulating user group links. A remote user can manipulate user group links to escalate privileges.
Affected software
YouTrack
How to mitigate CVE-2026-103490
Install security update from vendor's website.
YouTrack - update to 2026.2.19422