Moodle Permissions Privileges and Access Controls Vulnerability - CVE-2013-1830
user/view.php in Moodle through 2.1.10 2.2.x before 2.2.8 2.3.x before 2.3.5 and 2.4.x before 2.4.2 does not enforce the forceloginforprofiles setting which allows remote attackers to obtain sensitive course-profile information by leveraging the guest role as demonstrated by a Google search.