Moodle before 2.2.2 has a permission issue in Forum Subscriptions where unenrolled users can subscribe/unsubscribe via mod/forum/index.php
| Software | From | Fixed in |
|---|---|---|
| moodle / moodle | - | 2.2.2 |
| fedoraproject / fedora | 17 | 17.x |
| fedoraproject / fedora | 16 | 16.x |
| fedoraproject / fedora | 15 | 15.x |