Missing Authorization in YouTrack - CVE-2026-86495
Published: September 7, 2026
Vulnerability identifier: #VU147344
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-86495
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to create knowledge base articles in inaccessible projects.
The vulnerability exists due to missing permission checks in knowledge base article creation when creating knowledge base articles. A remote user can submit article creation requests to create knowledge base articles in inaccessible projects.
Affected software
YouTrack
How to mitigate CVE-2026-86495
Install security update from vendor's website.
YouTrack - update to 2026.2.18687