{"id":"CVE-2023-23923","aliases":["BIT-moodle-2023-23923","GHSA-32jc-9p58-p82x"],"url":"https://o3.security/vulnerability/CVE-2023-23923","summary":"Moodle: possible to set the preferred \"start page\" of other users","details":"The vulnerability was found Moodle which exists due to insufficient limitations on the \"start page\" preference. A remote attacker can set that preference for another user. The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.","published":"2023-02-17T00:00:00Z","modified":"2026-08-12T03:51:38.279717307Z","cvss":{"score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.9.19"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.11.12"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"4.0.6"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"4.1.1"}],"fix":null,"references":[{"type":"WEB","url":"http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-76862"},{"type":"WEB","url":"https://git.moodle.org"},{"type":"WEB","url":"https://moodle.org/mod/forum/discuss.php?d=443274#p1782023"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/23xxx/CVE-2023-23923.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23923"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2162549"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:38.279717307Z"}}