CVE-2026-86489: CWE-639 in JetBrains YouTrack
CVE-2026-86489 is an Insecure Direct Object Reference (IDOR) vulnerability in JetBrains YouTrack before version 2026.2.18634. It affects the user profile API and allows unauthorized disclosure of private issues and starred folders across organizations. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity level. There is no official patch or remediation information currently available, and no known exploits in the wild have been reported.
AI Analysis
Technical Summary
This vulnerability (CWE-639) in JetBrains YouTrack involves an IDOR flaw in the user profile API that permits unauthorized users with limited privileges to access private issues and starred folders belonging to other organizations. The flaw exists in versions prior to 2026.2.18634. The CVSS vector indicates network attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, high confidentiality impact, and no impact on integrity or availability.
Potential Impact
The vulnerability allows unauthorized disclosure of sensitive information such as private issues and starred folders across organizational boundaries. This can lead to confidentiality breaches but does not affect system 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. Since no official fix or remediation level is provided, users should monitor JetBrains advisories for updates and consider restricting access to the affected API until a fix is available.
CVE-2026-86489: CWE-639 in JetBrains YouTrack
Description
CVE-2026-86489 is an Insecure Direct Object Reference (IDOR) vulnerability in JetBrains YouTrack before version 2026.2.18634. It affects the user profile API and allows unauthorized disclosure of private issues and starred folders across organizations. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity level. There is no official patch or remediation information currently available, and no known exploits in the wild have been reported.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-639) in JetBrains YouTrack involves an IDOR flaw in the user profile API that permits unauthorized users with limited privileges to access private issues and starred folders belonging to other organizations. The flaw exists in versions prior to 2026.2.18634. The CVSS vector indicates network attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, high confidentiality impact, and no impact on integrity or availability.
Potential Impact
The vulnerability allows unauthorized disclosure of sensitive information such as private issues and starred folders across organizational boundaries. This can lead to confidentiality breaches but does not affect system 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. Since no official fix or remediation level is provided, users should monitor JetBrains advisories for updates and consider restricting access to the affected API until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:36.763Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9ee859acd9273b49f0e413
Added to database: 09/07/2026, 16:37:45 UTC
Last enriched: 09/07/2026, 16:54:31 UTC
Last updated: 09/08/2026, 00:20:11 UTC
Views: 9
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