On the RICOH MP C6503 Plus 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.
http://packetstormsecurity.com/files/149495/RICOH-MP-C6503-Plus-Printer-Cross-Site-Scripting.html