Moodle is vulnerable to cross-site scripting (XSS). An attacker is able to inject and execute malicious script in a user’s browser via Text-based feedback answers.
packetstormsecurity.com/files/164817/Moodle-Cross-Site-Scripting-Server-Side-Request-Forgery.html
bugzilla.redhat.com/show_bug.cgi?id=1939037
github.com/advisories/GHSA-x2jp-hh65-4xvf
github.com/moodle/moodle/commit/a303eb9e9e387f95ea2a80cb1ce6c0b132ec1cc4
lists.fedoraproject.org/archives/list/[email protected]/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/
lists.fedoraproject.org/archives/list/[email protected]/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZM/
lists.fedoraproject.org/archives/list/[email protected]/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/
moodle.org/mod/forum/discuss.php?d=419651