WordPress Real Estate Theme 2.8.9 Cross Site Scripting

WordPress Real Estate theme version 2.8.9 suffers from a cross site scripting vulnerability.

MD5 | 118bd6bd2d2b5e0c800c3f2bb8f7a15a

# Exploit Title: Real Estate 7 - Real Estate WordPress Theme v2.8.9 Persistent XSS Injection
# Google Dork: inurl:"/wp-content/themes/realestate-7/"
# Date: 2019/07/20
# Author: m0ze
# Vendor Homepage: https://contempothemes.com
# Software Link: https://themeforest.net/item/wp-pro-real-estate-7-responsive-real-estate-wordpress-theme/12473778
# Version: <= 2.8.9
# Tested on: NginX
# CVE: -
# CWE: CWE-79

Details & Description:
The «Real Estate 7» premium WordPress theme is vulnerable to persistent XSS
injection that allows an attacker to inject JavaScript or HTML code into
the website front-end.

Special Note:
- 7.151 Sales
- If pre moderation is enabled, then u have a huge chance to steal an admin
or moderator cookies.
- U can edit any existed listing on the website by changing the unique ID
-> https://site.com/edit-listing/?listings=XXX (where XXX is WordPress post
ID, u can find it inside <body> tag class).

PoC [Persistent XSS Injection]:
First of all, register a new account as a seller or agent, log in and
choose free membership package @ the dashboard. After that u'll be able to
submit a new listing -> https://site.com/submit-listing/
For persistent XSS injection u need to add ur payload inside the «Vitrual
Tour Embed» text area (on the «DETAILS» step) and then press «Submit»
Example: <img src="x" onerror="(alert)(`m0ze`)">

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