Tuleap is an Open Source Suite to improve management of software developments and collaboration. Tuleap is missing CSRF protection on tracker hierarchy administration. An attacker could use this vulnerability to trick victims into submitting or editing artifacts or follow-up comments. This vulnerability is fixed in Tuleap Community Edition 16.5.99.1742306712 and Tuleap Enterprise Edition 16.5-5 and 16.4-8.