CVE-2026-86500: CWE-266 in JetBrains YouTrack
Description
CVE-2026-86500 is a vulnerability in JetBrains YouTrack before version 2026.1.14047 where a missing escalation check allows a user with project update permissions to elevate their privileges to Project Admin. This flaw is categorized under CWE-266 (Incorrect Privilege Assignment). The vulnerability has a medium severity with a CVSS score of 5.5.
CVSS v3.1
Score 5.5medium
Affected software
JetBrains
YouTrack
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in JetBrains YouTrack (versions before 2026.1.14047) involves a missing escalation check that permits users who have project update permissions to grant themselves Project Admin privileges. This improper privilege assignment could lead to unauthorized administrative access within the project scope. The CVSS 3.1 vector indicates network attack vector, low attack complexity, high privileges required, no user interaction, scope changed, with low confidentiality and integrity impact and no availability impact.
Potential Impact
An attacker with project update permissions can escalate their privileges to Project Admin, potentially allowing them to perform administrative actions within the project that they should not be authorized to do. This could lead to unauthorized changes or access to sensitive project configurations or data.
Mitigation Recommendations
A fix is available in JetBrains YouTrack version 2026.1.14047. Users should upgrade to this version or later to remediate the vulnerability. Since this is not a cloud service, remediation depends on applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:40.130Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9ee85bacd9273b49f0e446
Added to database: 09/07/2026, 16:37:47 UTC
Last enriched: 09/15/2026, 01:19:01 UTC
Last updated: 10/22/2026, 13:15:24 UTC
Views: 94
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