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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title: WordPress MDC Private Message Persistent XSS
# Date: 8/20/15
# Exploit Author: Chris Kellum
# Vendor Homepage: http://medhabi.com/
# https://wordpress.org/plugins/mdc-private-message/
# Version: 1.0.0



=====================
Vulnerability Details
=====================

The 'message' field doesn't sanitize input, allowing a less privileged user (Editor, Author, etc.)
to execute an XSS attack against an Administrator.

Proof of Concept: 

Place <script>alert('Hello!')</script> in the message field of a private message and then submit.

Open the message and the alert window will fire.

===================
Disclosure Timeline
===================

8/16/15 - Vendor notified.
8/19/15 - Version 1.0.1 released.
8/20/15 - Public Disclosure.