In JetBrains Hub before 2025.3.119807 authentication bypass allowing administrative actions was possible

The authentication bypass vulnerability in JetBrains Hub poses a severe risk. An attacker exploiting this flaw could gain unauthorized access to administrative functionalities, enabling them to modify user accounts, access sensitive data, and potentially compromise the entire system. This could result in data breaches, denial of service, and complete control over the Hub instance. The impact is particularly concerning for organizations relying on JetBrains Hub for project management and collaboration, as attackers could manipulate projects, steal intellectual property, or disrupt development workflows. The ability to bypass authentication effectively removes a critical security layer, making the system highly vulnerable to malicious actors.

Organizations using JetBrains Hub for project management and collaboration are at risk, particularly those with legacy configurations or those who have not implemented robust access controls. Teams relying on Hub for sensitive code repositories and intellectual property are especially vulnerable to data breaches and intellectual property theft.

• jetbrains / server:

# Check for Hub version
curl -s -o /dev/null -w '%{http_code}' <hub_url>/api/version

• generic web:

# Check for exposed administrative endpoints (example)
curl -s -o /dev/null -w '%{http_code}' <hub_url>/admin/users

1. 2026-02-09Disclosure

   disclosure

1. Reserviert2026-02-06
2. Veröffentlicht2026-02-09
3. Geändert2026-02-26
4. EPSS aktualisiert2026-03-23

The primary mitigation for CVE-2026-25848 is to immediately upgrade JetBrains Hub to version 2025.3.119807 or later. If upgrading is not immediately feasible, consider implementing stricter access controls and multi-factor authentication (MFA) to limit the potential impact of a successful attack. Review existing user permissions and remove any unnecessary administrative privileges. Monitor JetBrains Hub logs for suspicious activity, particularly failed login attempts and unusual administrative actions. While a direct workaround is unavailable, enhanced monitoring and access control can reduce the attack surface.