Plone CMS 5.2.3 - 'Title' Stored XSS

# Exploit Title: Plone CMS 5.2.3 - 'Title' Stored XSS
# Date: 18-03-2021
# Exploit Author: Piyush Patil
# Vendor Homepage: https://plone.com/
# Software Link: https://github.com/plone/Products.CMFPlone/tags
# Version: 5.2.3
# Tested on: Windows 10


# Reference - https://github.com/plone/Products.CMFPlone/issues/3255

Steps to reproduce the issue:
1- Goto https://localhost/ where Plone 5.2.3 version is installed.
2- Click on "Log in now" and Login as "Manager"
3- Navigate to Manager=>Site Setup=>Site
4- Edit "Site title" field to "xyz<ScRiPt>alert(1)</ScRiPt>"