{"id":"CVE-2021-36402","aliases":["BIT-moodle-2021-36402","GHSA-gv8f-43pg-c5qw"],"url":"https://o3.security/vulnerability/CVE-2021-36402","summary":"Moodle Improper Input Validation vulnerability","details":"In affected versions of Moodle, users' names require additional sanitizing in the account confirmation email, to prevent a self-registration phishing risk. This issue has been patched in versions 3.9.8, 3.10.5 and 3.11.1. ","published":"2023-03-06T23:15:10.473Z","modified":"2026-07-09T01:31:18.371474Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.11.1"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.10.5"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.9.8"}],"fix":null,"references":[{"type":"FIX","url":"https://moodle.org/mod/forum/discuss.php?d=424808"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36402"},{"type":"PACKAGE","url":"https://github.com/moodle/moodle"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T01:31:18.371474Z"}}