CVE-2026-86489: CWE-639 in JetBrains YouTrack
Description
In JetBrains YouTrack before 2026.2.18634 an IDOR in the user profile API disclosed private issues and starred folders across organizations
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
JetBrains YouTrack versions prior to 2026.2.18634 contain an IDOR vulnerability (CVE-2026-86489) in the user profile API. This vulnerability permits an attacker with limited privileges to access private issues and starred folders belonging to other organizations, violating access control policies. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, required privileges, no user interaction, unchanged scope, high confidentiality impact, and no integrity or availability impact.
Potential Impact
The vulnerability allows unauthorized users with some privileges to read sensitive data such as private issues and starred folders from other organizations, potentially leading to information disclosure. There is no indication of impact on data integrity or availability. No active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the user profile API and monitor for unusual access patterns. Follow vendor updates closely for any released patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-346h-5p4g-633v
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-86489"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9f9118acd9273b49ff2d48
Added to database: 09/08/2026, 04:37:44 UTC
Last enriched: 09/08/2026, 04:53:19 UTC
Last updated: 10/07/2026, 06:48:19 UTC
Views: 85
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