Description of problem: Since Firefox 59, the basic HTTP authentication code has been modified and content (username and password) are transmitted in UTF-8 format instead of ISO-8859-1. My password contains a French accent (รจ aka lowercase e with grave accent). The login fails since Firefox 59. This probably affects others releases of JBoss. Buf reference in Firefox : https://bugzilla.mozilla.org/show_bug.cgi?id=1449112 Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. Include an accent in your password. 2. Login in 3. Actual results: Login rejected Expected results: Login approved Additional info: