YouTrack <2026.2.18634 Improper Permission Checks Overwrite Bundled Apps
CVE-2026-86490 Published on September 7, 2026
In JetBrains YouTrack before 2026.2.18634 improper permission checks allowed overwriting of bundled apps via the app import endpoint
Vulnerability Analysis
CVE-2026-86490 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity, and no impact on availability.
Weakness Type
What is an AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2026-86490 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-86490
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Affected Versions
JetBrains YouTrack:- Before 2026.2.18634 is affected.