A vulnerability was found in Moodle 3.7 to 3.7.2, 3.6 to 3.6.6, 3.5 to 3.5.8 and earlier. OAuth 2 providers who do not verify users' email address changes require additional verification during sign-up to reduce the risk of account compromise. Reference: http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-66598
Created moodle tracking bugs for this issue: Affects: epel-all [bug 1788386]