CVE-2026-86482: CWE-266 in JetBrains YouTrack
Description
In JetBrains YouTrack before 2026.2.18634, insufficient validation of role assignments allowed privilege escalation
CVSS v3.1
Score 8.8high
Affected software
JetBrains
YouTrack
pkg:github/jetbrains/YouTrackRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-266 (Improper Access Control), affects JetBrains YouTrack versions prior to 2026.2.18634. The flaw arises from inadequate validation of role assignments, enabling privilege escalation. The CVSS 3.1 score is 8.8, indicating a high impact with network attack vector, low attack complexity, privileges required, no user interaction, and high confidentiality, integrity, and availability impacts.
Potential Impact
An attacker with some level of privileges in YouTrack can exploit this vulnerability to escalate their privileges, potentially gaining unauthorized access to sensitive functions or data. This can lead to full compromise of the affected YouTrack instance's confidentiality, integrity, and availability.
Mitigation Recommendations
A fix is available in JetBrains YouTrack version 2026.2.18634. Users should upgrade to this version or later to remediate the vulnerability. No other mitigation steps are indicated in the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:34.718Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9ee857acd9273b49f0e3e6
Added to database: 09/07/2026, 16:37:43 UTC
Last enriched: 09/23/2026, 02:28:11 UTC
Last updated: 10/22/2026, 01:15:26 UTC
Views: 71
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