RICOH MP C4504ex devices allow HTML Injection via the /web/entry/en/address/adrsSetUserWizard.cgi entryNameIn parameter.
https://www.exploit-db.com/exploits/45264/
https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-7741
http://packetstormsecurity.com/files/149082/RICOH-MP-C4504ex-Cross-Site-Request-Forgery.html