ChinaMobile PLC Wireless Router GPN2.4P21-C-CN devices with firmware W2001EN-00 have XSS via the cgi-bin/webproc?getpage=html/index.html var:subpage parameter.
https://www.exploit-db.com/exploits/46081/
https://0dayfindings.home.blog/2018/12/26/plc-wireless-router-gpn2-4p21-c-cn-reflected-xss/