stamperiamarchi.it XSS vulnerability

Vulnerable URL: https://www.stamperiamarchi.it/modules/modjoinstagrambox/tmpl/instagrambox.php?username=xss%22%3E%3Csvg/onload=prompt/openbugbounty/%3E=〈=it=true=true=100%=350pxℑ=medium=BC5E1E=F8F8F8=FFFFFF==260796206.0efbe26.89a76a9668934089a2d00d928486fd26 Details: Description| Value ---|---...