Insecure Access Control

moodle/moodle uses an insecure access control. An unauthorized user is able to view the full name of other users via the online users block...

UBUNTU-CVE-2021-20281

It was possible for some users without permission to view other users' full names to do so via the online users block in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17...