In Moodle, it was possible to include JavaScript when re-naming content bank items. Versions affected: 3.9 to 3.9.2. This is fixed in moodle 3.9.3 and 3.10.
bugzilla.redhat.com/show_bug.cgi?id=1895437
github.com/moodle/moodle/commit/66be08216e647532b295a9132070d2435ecd7ad9
lists.fedoraproject.org/archives/list/[email protected]/message/4NNFCHPPHRJNJROIX6SYMHOC6HMKP3GU
lists.fedoraproject.org/archives/list/[email protected]/message/B55KXBVAT45MDASJ3EK6VIGQOYGJ4NH6
moodle.org/mod/forum/discuss.php?d=413940
nvd.nist.gov/vuln/detail/CVE-2020-25702