In Moodle 3.x, there is XSS via a calendar event name.
{
"github_reviewed": true,
"severity": "MODERATE",
"cwe_ids": [
"CWE-79"
],
"nvd_published_at": "2018-01-22T08:29:00Z",
"github_reviewed_at": "2023-07-25T21:07:32Z"
}