{"id":"CVE-2023-28332","aliases":["BIT-moodle-2023-28332","GHSA-9f45-9qrw-pp4v"],"url":"https://o3.security/vulnerability/CVE-2023-28332","summary":"Moodle: algebra filter xss when filter is misconfigured","details":"If the algebra filter was enabled but not functional (eg the necessary binaries were missing from the server), it presented an XSS risk.","published":"2023-03-23T00:00:00Z","modified":"2026-08-12T03:51:42.094596623Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.00634,"percentile":0.47509,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"4.1.2"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"4.0.7"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.11.13"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.9.20"}],"fix":{"url":"https://github.com/moodle/moodle/commit/9f178c1f816e78ec024ab16a10192c81305b2624","label":"moodle/moodle@9f178c1"},"references":[{"type":"WEB","url":"https://git.moodle.org"},{"type":"WEB","url":"https://moodle.org/mod/forum/discuss.php?d=445064"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28332.json"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QZN34VSF4HTCW3C3ZP2OZYSLYUKADPF/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28332"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2179419"},{"type":"WEB","url":"https://github.com/moodle/moodle/commit/9f178c1f816e78ec024ab16a10192c81305b2624"},{"type":"WEB","url":"https://git.moodle.org/gw?p=moodle.git;a=commitdiff;h=9f178c1f816e78ec024ab16a10192c81305b2624"},{"type":"PACKAGE","url":"https://github.com/moodle/moodle"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QZN34VSF4HTCW3C3ZP2OZYSLYUKADPF"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3QZN34VSF4HTCW3C3ZP2OZYSLYUKADPF"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:42.094596623Z"}}