CVE-2025-59040 is a medium-severity vulnerability affecting Enalean's Tuleap, an open-source software suite designed to enhance software development management and collaboration. The vulnerability arises from improper handling of insufficient permissions or privileges (CWE-280) in the backlog item representations within Tuleap. Specifically, the system fails to verify the permissions of child trackers when displaying backlog items, allowing users with limited privileges to view tracker names they should not have access to. This issue does not allow modification or deletion of data but leaks potentially sensitive metadata about project trackers. The vulnerability affects Tuleap versions prior to 16.11.99.1757427600 and has been addressed in Tuleap Community Edition 16.11.99.1757427600 and Enterprise Editions 16.11-6 and 16.10-8. The CVSS v3.1 score is 4.3 (medium), reflecting that the vulnerability can be exploited remotely over the network with low attack complexity and requires low privileges but no user interaction. The impact is limited to confidentiality, with no effect on integrity or availability. No known exploits are currently reported in the wild.

For European organizations using Tuleap, especially those involved in software development and project management, this vulnerability could lead to unauthorized disclosure of sensitive project information. Although the exposure is limited to tracker names and does not allow data modification or system disruption, leaking project structure details could aid attackers in reconnaissance efforts or internal threat actors in gaining insights into project workflows and priorities. This could be particularly impactful for organizations handling sensitive or proprietary software projects, government agencies, or critical infrastructure sectors where project confidentiality is paramount. The medium severity indicates a moderate risk, but the lack of known exploits and the requirement for some level of authenticated access reduce the immediate threat level. Nonetheless, organizations should consider the potential for insider threats or lateral movement scenarios where this information leakage could be leveraged.

European organizations should promptly upgrade affected Tuleap instances to the fixed versions: Community Edition 16.11.99.1757427600 or Enterprise Editions 16.11-6 and 16.10-8. Until upgrades are applied, administrators should review and tighten access controls and permissions on trackers and backlog items to minimize exposure. Implement strict role-based access control (RBAC) policies and audit user permissions regularly to ensure users have only the minimum necessary privileges. Monitoring and logging access to backlog items and trackers can help detect unauthorized access attempts. Additionally, organizations should educate users about the sensitivity of project metadata and enforce policies to limit sharing of tracker information outside authorized personnel. Network segmentation and limiting Tuleap access to trusted internal networks can further reduce exposure to external attackers.