KirbyCMS Cross Site Scripting

`# Exploit Title: KirbyCMS <2.5.7 Stored Cross Site Scripting  
# Vendor Homepage: https://getkirby.com/  
# Software Link: https://getkirby.com/try  
# Discovered by: Ishaq Mohammed  
# Contact: https://twitter.com/security_prince  
# Website: https://about.me/security-prince  
# Category: webapps  
# Platform: PHP  
# CVE: CVE-2017-16807  
  
1. Description  
  
A cross-site Scripting (XSS) vulnerability in Kirby Panel before 2.3.3,  
2.4.x before 2.4.2, and 2.5.x before 2.5.7 exists when displaying a  
specially prepared SVG document that has been uploaded as a content file.  
  
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16807  
  
2. Proof of Concept  
  
Steps to Reproduce:  
Log in as an Editor and click on Site Options  
Add the malicious .svg file which contains the javascript to the Site  
Login to another browser with Admin Credentials.  
Click on Site Options.  
Click on the newly added .svg file  
  
3. Reference  
  
https://getkirby.com/changelog/kirby-2-5-7  
  
4. Solution  
  
The vulnerability is patched by the vendor in the version 2.5.7.  
  
--   
Best Regards,  
Ishaq Mohammed  
https://about.me/security-prince  
`