by simply using the theme url http://www.hacksannio.it/wp-content/themes/betheme/ we can raise an error Fatal error : Uncaught Error: Call to undefined function get_header() in /web/htdocs/www.hacksannio.it/home/wp-content/themes/betheme/index.php:10 Stack trace: #0 {main} thrown in /web/htdocs/www.hacksannio.it/home/wp-content/themes/betheme/index.php on line 10 _______________ Update: after getting the possibility to execute code it's possible to locally escalate root privileges (expl. openrestinpeace) and local DoS. There are several other websites on the server: 9plus.it abgdhs.com academyhoreca.it acquagia.com agropolibooking.it albertogalantini.com alcacomunicazione.it alexandramatveeva.com alkemicaproject.it allianceagainstcancer.org anelli.info angolodeidesideri.it antonelladambrosio.com apicolturavallicupe.com appcreative.it arredostil.it aspveneto.org avvocatovitali.com bbqcombi.com belsiana7central.com beneventocalcio.i...