A flaw was found in Moodle versions 3.1 to 3.1.15 and earlier unsupported versions. The mybackpack functionality allowed setting the URL of badges, when it should be restricted to the Mozilla Open Badges backpack URL. This resulted in the possibility of blind SSRF via requests made by the page. References: https://moodle.org/mod/forum/discuss.php?d=381229#p1536766 Upstream Patch: http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-64222
Created moodle tracking bugs for this issue: Affects: epel-all [bug 1668068]