Exponent CMS 2.3.1 Cross Site Scripting

`######################  
# Exploit Title: Multiple Exponent CMS Cross-Site Scripting Vulnerabilies  
# Discovered by-  
# Mayuresh Dani ([email protected])  
# Narendra Shinde ([email protected])  
# Vendor Homepage: http://www.exponentcms.org/  
# Software Link:  
http://sourceforge.net/projects/exponentcms/files/exponent-2.3.1.zip/download  
# Version: 2.3.1  
# Date: 2014-10-11  
# Tested on: Windows 7 / Mozilla Firefox  
# Ubuntu 14.04 / Mozilla Firefox  
# CVE: CVE-2014-8690  
######################  
# Vulnerability Disclosure Timeline:  
# 2014-11-04: Discovered vulnerability  
# 2014-11-04: Vendor Notification  
# 2014-11-05: Vendor confirmation  
# 2014-11-06: Vendor fixes Universal XSS -  
http://www.exponentcms.org/news/security-patch-released-for-v2-1-4-v2-2-3-and-v2-3-0  
# 2015-02-12: Public Disclosure  
######################  
# Description  
# Exponent CMS is a free, open source, open standards modular enterprise  
software framework and content management system (CMS) written in the PHP.  
#  
# CVE-2014-8690:  
# Universal XSS - Exponent CMS builds the canonical path field from an  
unsanitized URL, which can be used to execute arbitrary scripts.  
# Examples:  
#  
http://www.exponentcms.org/news/show/title/time-for-a-heavy-harvest-new-release/src/%22%3E%3Cscript%3Ealert%287%29%3C/script%3E@random4cd201e063d5c  
#  
http://www.exponentcms.org/news/show/title/%22%3E%3Cscript%3Ealert%287%29%3C/script%3Etime-for-a-heavy-harvest-new-release/src/@random4cd201e063d5c  
#  
http://www.exponentcms.org/news/%22%3E%3Cscript%3Ealert%287%29%3C/script%3Eshow/title/time-for-a-heavy-harvest-new-release/src/@random4cd201e063d5c  
#  
# 2.b. XSS in user profiles.  
# The "First Name" and "Last Name" fields on  
http://server/exponent/users/edituser are not sufficiently sanitized. Enter  
your favourite script and the application will execute it everytime for you.  
#  
# More information and PoCs -  
http://exponentcms.lighthouseapp.com/projects/61783/tickets/1230-universal-cross-site-scripting-in-exponent-cms-231-and-prior  
#  
#  
# Thanks,  
# Mayuresh & Narendra  
`