{"id":"CVE-2014-6393","aliases":["GHSA-gpvr-g6gh-9mc2"],"url":"https://o3.security/vulnerability/CVE-2014-6393","summary":"No Charset in Content-Type Header in express","details":"The Express web framework before 3.11 and 4.x before 4.5 for Node.js does not provide a charset field in HTTP Content-Type headers in 400 level responses, which might allow remote attackers to conduct cross-site scripting (XSS) attacks via characters in a non-standard encoding.","published":"2017-08-09T18:29:00Z","modified":"2026-04-10T03:43:59.990634Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"express","fixedVersion":"3.11.0"},{"ecosystem":"npm","name":"express","fixedVersion":"4.5.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1203190"},{"type":"ADVISORY","url":"https://nodesecurity.io/advisories/express-no-charset-in-content-type-header"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1203190"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-10T03:43:59.990634Z"}}