{"id":"CVE-2021-23974","details":"The DOMParser API did not properly process '\u003cnoscript\u003e' elements for escaping. This could be used as an mXSS vector to bypass an HTML Sanitizer. This vulnerability affects Firefox \u003c 86.","modified":"2026-05-04T08:33:47.286940Z","published":"2021-02-26T02:15:13.320Z","withdrawn":"2026-05-04T08:33:47.286940Z","related":["openSUSE-SU-2024:10600-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202104-10"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-07/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1528997%2C1683627"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"86.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23974.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}