Chamilo is a learning management system. Prior to version 1.11.30, the application performs insufficient validation of data coming from the user from the GET value parameter with the following scripts: /plugin/vchamilo/views/syncparams.php and /plugin/vchamilo/ajax/service.php, which allows an attacker to perform an attack aimed at modifying the database query logic by injecting an arbitrary SQL statements. This issue has been patched in version 1.11.30.