mod/forum/unsubscribeall.php in Moodle 2.1.x before 2.1.7 and 2.2.x before 2.2.4 does not consider whether a forum is optional, which allows remote authenticated users to bypass forum-subscription requirements by leveraging the student role and unsubscribing from all forums.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Moodle | — | Upgrade to the latest version of Moodle | Sep 19, 2017 | Jul 23, 2012 |
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