CVE-2021-36568: In certain Moodle products after creating a course, it is possible to add in a arbitrary "Topic" a resource, in this case a "Database" with the type "Text" where its values "Field name" and "Field description" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7. No information about remediation at URL, and the other reference 404's for me: https://drive.google.com/drive/folders/1_fO4BKpmD3avGYHSzvIXWs5owqVYgB1s?usp=sharing
These researchers at URL have a Portugese-language dominated Discord server, trying to get through to them..
RedHat says this doesn't affect any of their commercially supported products: https://bugzilla.redhat.com/show_bug.cgi?id=2126857