Insufficient web service capability checks made it possible to move categories a user had permission to manage, to a parent category they did not have the capability to manage. This flaw affects versions 4.2 to 4.2.2, 4.1 to 4.1.5, 4.0 to 4.0.10, 3.11 to 3.11.16, 3.9 to 3.9.23 and earlier unsupported versions.
https://moodle.org/mod/forum/discuss.php?d=451590
Created moodle tracking bugs for this issue: Affects: epel-7 [bug 2244919] Affects: fedora-all [bug 2244920]