This Metasploit module exploits a PHP object injection vulnerability in Tuelap <= 7.6-4 which could be abused to allow authenticated users to execute arbitrary code with the permissions of the web server. The dangerous unserialize() call exists in the ‘src/www/project/register.php’ file. The exploit abuses the destructor method from the Jabbex class in order to reach a call_user_func_array() call in the Jabbex class and call the fetchPostActions() method from the Transition_PostAction_FieldFactory class to execute PHP code through an eval() call. In order to work, the target must have the ‘sys_create_project_in_one_step’ option disabled.