Authentication bypass using an alternate path or channel in YouTrack - CVE-2026-75045
Published: August 17, 2026
Vulnerability identifier: #VU143870
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-75045
CWE-ID: CWE-288
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to download database backups.
The vulnerability exists due to improper authentication in shared draft signature handling when accessing backup download functionality. A remote attacker can use a shared draft signature to download database backups.
Affected software
YouTrack
How to mitigate CVE-2026-75045
Install security update from vendor's website.
YouTrack - addressed in versions 2025.3.156085, 2026.1.13913, 2026.2.18112