{"id":"UBUNTU-CVE-2021-36401","details":"In Moodle, ID numbers exported in HTML data formats required additional sanitizing to prevent a local stored XSS risk.","modified":"2026-09-23T18:46:12.890558445Z","published":"2023-03-06T22:15:00Z","upstream":["CVE-2021-36401"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-36401"},{"type":"REPORT","url":"https://moodle.org/mod/forum/discuss.php?d=424807"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-36401"}],"affected":[{"package":{"name":"moodle","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/moodle?arch=source&distro=esm-apps-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.9+dfsg-1","2.7.10+dfsg-1","2.7.11+dfsg-1","2.7.11+dfsg-2","2.7.12+dfsg-1","3.0.3+dfsg-0ubuntu1","3.0.3+dfsg-0ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"moodle","binary_version":"3.0.3+dfsg-0ubuntu1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36401.json"}},{"package":{"name":"moodle","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/moodle?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.3+dfsg-0ubuntu1","3.0.3+dfsg-0ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.0.3+dfsg-0ubuntu1+esm1","binary_name":"moodle"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36401.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}