{"id":"CVE-2021-36396","aliases":["BIT-moodle-2021-36396","GHSA-4rmj-w58m-fvch"],"url":"https://o3.security/vulnerability/CVE-2021-36396","summary":"Moodle vulnerable to Server-Side Request Forgery","details":"In Moodle, insufficient redirect handling made it possible to blindly bypass cURL blocked hosts/allowed ports restrictions, resulting in a blind SSRF risk.","published":"2023-03-06T21:15:10.577Z","modified":"2026-07-09T05:14:10.572619Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":2,"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=424802"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T05:14:10.572619Z"}}