Improper Permission Checks in JetBrains YouTrack Allow Overwriting of Bundled Apps
CVE-2026-86490

6.5MEDIUM

Key Information:

Vendor

Jetbrains
Status
Youtrack
Vendor
CVE Published:
7 September 2026

What is CVE-2026-86490?

In JetBrains YouTrack versions prior to 2026.2.18634, a security vulnerability exists due to improper permission checks. This flaw enables attackers to exploit the app import endpoint, potentially allowing unauthorized overwriting of bundled applications. It highlights the necessity for stringent access control measures in application management to prevent misuse.

Affected Version(s)

YouTrack 0 < 2026.2.18634

References

https://www.jetbrains.com/privacy-security/issues-fixed/

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.