On the RICOH MP C1803 JPN printer, HTML Injection and Stored XSS vulnerabilities have been discovered in the area of adding addresses via the entryNameIn parameter to /web/entry/en/address/adrsSetUserWizard.cgi.
https://www.exploit-db.com/exploits/45526/
https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-9065
http://packetstormsecurity.com/files/149494/RICOH-MP-C1803-JPN-Printer-Cross-Site-Scripting.html