{"id":"CVE-2021-20184","aliases":["BIT-moodle-2021-20184","GHSA-mm73-86f9-5x5c"],"url":"https://o3.security/vulnerability/CVE-2021-20184","summary":"Moodle Grade information disclosure in grade's external fetch functions","details":"It was found in Moodle before version 3.10.1, 3.9.4 and 3.8.7 that a insufficient capability checks in some grade related web services meant students were able to view other students grades.","published":"2021-01-28T19:15:13.237Z","modified":"2026-07-08T22:14:55.790504Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},"epss":{"score":0.00719,"percentile":0.51102,"asOf":"2026-08-25"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.8.7"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.9.4"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.10.1"}],"fix":null,"references":[{"type":"FIX","url":"https://moodle.org/mod/forum/discuss.php?d=417167"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20184"},{"type":"PACKAGE","url":"https://github.com/moodle/moodle"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T22:14:55.790504Z"}}