Privilege Escalation in JetBrains YouTrack via Group Membership

Executive Summary

This vulnerability in JetBrains YouTrack before version 2026.2.19422 allows an attacker to escalate their privileges by manipulating user group membership changes. This means a user with limited access could gain higher-level permissions, potentially allowing unauthorized actions within the system.

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Impact Analysis

If exploited, this vulnerability could allow attackers to gain elevated access to sensitive data or administrative functions in YouTrack. This might lead to data breaches, unauthorized modifications, or disruption of services, depending on the attacker's goals.

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Compliance Impact

The vulnerability allows privilege escalation through user group membership changes, which could lead to unauthorized access to sensitive data. This may violate compliance requirements under GDPR (data protection) and HIPAA (health information security) by enabling unauthorized access to personal or protected health information.

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Mitigation Strategies

Update JetBrains YouTrack to version 2026.2.19422 or later to address the privilege escalation vulnerability.

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