IDOR Vulnerability in JetBrains YouTrack Affects User Profile API
CVE-2026-86489

6.5MEDIUM

Key Information:

Vendor

Jetbrains
Status
Youtrack
Vendor
CVE Published:
7 September 2026

What is CVE-2026-86489?

In JetBrains YouTrack, prior to version 2026.2.18634, an Insecure Direct Object Reference (IDOR) vulnerability exists within the user profile API. This flaw allows unauthorized users to access private issues and starred folders, potentially exposing sensitive information across organizations. Proper access controls should be enforced to prevent such unauthorized disclosures.

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:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.