CVE-2014-7834
mod/forum/externallib.php in Moodle 2.6.x before 2.6.6 and 2.7.x before 2.7.3 does not verify group permissions, which allows remote authenticated users to access a forum via the forum_get_discussions web service.
Date published : 2014-11-24
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-45303