CVE-2025-54877 is an authorization vulnerability identified in Enalean's Tuleap software, an open-source suite designed to facilitate software development management and collaboration. The flaw exists in versions prior to 16.10.99.1754050155 for the Community Edition and prior to 16.9-8 and 16.10-5 for the Enterprise Edition. The vulnerability arises from incorrect authorization checks on special and always-present fields within accessible artifacts. Specifically, an attacker can access the content of these fields even when the permissions associated with the underlying fields do not permit such access. This means that sensitive information stored in these special fields could be exposed to unauthorized users. The vulnerability is categorized under CWE-863, which relates to incorrect authorization, indicating that the system fails to properly enforce access controls. The CVSS v3.1 base score is 5.3 (medium severity), reflecting that the vulnerability can be exploited remotely without authentication or user interaction, but the impact is limited to confidentiality with no effect on integrity or availability. No known exploits are currently reported in the wild. The issue has been addressed in the specified patched versions of Tuleap Community and Enterprise Editions.

For European organizations using Tuleap for software development and project management, this vulnerability could lead to unauthorized disclosure of sensitive project data, including potentially confidential artifact information that should be restricted. This exposure could undermine intellectual property confidentiality, reveal internal workflows, or disclose sensitive technical details. While the vulnerability does not allow modification or disruption of data (no integrity or availability impact), unauthorized read access can still have significant consequences, especially for organizations handling sensitive or regulated data. Given the collaborative nature of Tuleap, unauthorized access could also facilitate further reconnaissance by attackers, potentially leading to more targeted attacks. The medium severity score suggests a moderate risk; however, the impact could be more pronounced in sectors with strict data confidentiality requirements such as finance, healthcare, and government agencies within Europe.

European organizations should promptly upgrade to the fixed versions of Tuleap: Community Edition 16.10.99.1754050155 or later, and Enterprise Edition 16.9-8 or 16.10-5 or later. Until upgrades are applied, organizations should audit and restrict access permissions to minimize exposure, ensuring that only trusted users have access to sensitive artifacts. Implementing network segmentation and access controls to limit Tuleap server access to authorized personnel can reduce risk. Additionally, monitoring access logs for unusual or unauthorized access attempts to artifacts can help detect exploitation attempts. Organizations should also review their internal policies on artifact field usage to avoid storing highly sensitive information in the affected special fields. Regular vulnerability scanning and patch management processes should be enforced to prevent exploitation of similar authorization issues.