Moodle 2.0.1 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by webservice/xmlrpc/locallib.php and certain other files.
It was possible for a student to view their quiz grade before it had been released, using a quiz web service. Moodle 3.10 to 3.10.3, 3.9 to 3.9.6, 3.8 to 3.8.8, 3.5 to 3.5.17 and earlier unsupported versions are affected
In Moodle 2.x and 3.x, the capability to view course notes is checked in the wrong context.
In Moodle 2.x and 3.x, the question engine allows access to files that should not be available.