Unfixed XSS vulnerability at www.gymnasiumkusel.de

Security researcher doublecheck, has submitted on 07/07/2011 a cross-site-scripting XSS vulnerability affecting www.gymnasiumkusel.de, which at the time of submission ranked 24181290 on the web according to Alexa. We manually validated and published a mirror of this vulnerability on 06/12/2011. I...