GHSA-C3H8-G69V-PJRG i18next-http-middleware: HTTP response splitting and DoS via unsanitised Content-Language header

Summary Versions of i18next-http-middleware prior to 3.9.3 wrote user-controlled language values into the Content-Language response header after passing them through utils.escape, which is an HTML-entity encoder that does not strip carriage return, line feed, or other control characters. When the...