Missing Authorization in YouTrack - CVE-2026-86479
Published: September 7, 2026
Vulnerability identifier: #VU147331
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-86479
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to access restricted REST API resources.
The vulnerability exists due to missing authorization in restricted REST API resources when processing requests that reference resource identifiers. A remote user can send a request referencing a restricted resource identifier to access restricted REST API resources.
Affected software
YouTrack
How to mitigate CVE-2026-86479
Install security update from vendor's website.
YouTrack - addressed in versions 2025.3.161254, 2026.1.14055, 2026.2.18788