{"id":"CVE-2021-40691","aliases":["BIT-moodle-2021-40691","GHSA-92vh-mr2w-j2cr"],"url":"https://o3.security/vulnerability/CVE-2021-40691","summary":"Moodle Improper Authentication","details":"A session hijack risk was identified in the Shibboleth authentication plugin.","published":"2022-09-29T03:15:14.240Z","modified":"2026-07-09T01:07:24.975879Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.9.10"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.10.7"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.11.3"}],"fix":null,"references":[{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2043411"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T01:07:24.975879Z"}}