{"id":"CVE-2021-20281","aliases":["BIT-moodle-2021-20281","GHSA-93wh-35r4-6qmw"],"url":"https://o3.security/vulnerability/CVE-2021-20281","summary":"Moodle allowed some users without permission to view other users' full names","details":"It was possible for some users without permission to view other users' full names to do so via the online users block in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","published":"2021-03-15T22:15:13.250Z","modified":"2026-07-08T06:00:31.901994399Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.10.2"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.9.5"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.8.8"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.5.17"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1939041"},{"type":"FIX","url":"https://moodle.org/mod/forum/discuss.php?d=419652"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T06:00:31.901994399Z"}}