{"id":"CVE-2020-1691","aliases":["BIT-moodle-2020-1691","GHSA-cwhp-rqfr-8462"],"url":"https://o3.security/vulnerability/CVE-2020-1691","summary":"Moodle XSS Vulnerability","details":"In Moodle 3.8, messages required extra sanitizing before updating the conversation overview, to prevent the risk of stored cross-site scripting.","published":"2022-08-05T16:15:10.680Z","modified":"2026-07-09T00:06:26.413056Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.8.1"}],"fix":{"url":"https://github.com/moodle/moodle/commit/4e809346537e230cbff8235bfee0e7e151e4e9f9","label":"moodle/moodle@4e80934"},"references":[{"type":"FIX","url":"https://moodle.org/mod/forum/discuss.php?d=395953"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1691"},{"type":"WEB","url":"https://github.com/moodle/moodle/commit/4e809346537e230cbff8235bfee0e7e151e4e9f9"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:06:26.413056Z"}}