tes.edu.ec XSS vulnerability

Vulnerable URL: http://www.tes.edu.ec/busqueda.php?cx=partner-pub-1277749542216999%3A8137526551=FORID%3A10=UTF-8=%3Cimg+src%3Dx+onerror%3Dprompt%28%2FOPENBUGBOUNTY%2F%29%3E=Buscar=www.tes.edu.ec%2F==1j1j2 Details: Description| Value ---|--- Patched:| Yes, at 25.11.2017 Latest check for patch:|...