Description: A Cross-Site Scripting (XSS) vulnerability in Quick CMS v6.7 allows a local attacker to execute arbitrary code via a crafted script to the to the Front and back end - Pages in the Languages Menu.
Attack Vectors: Scripting A vulnerability in the sanitization of the entry in the Pages of "Languages- Front and back end" allows injecting JavaScript code that will be executed when the user accesses the web page.
When logging into the panel, we will go to the "Languages - Front and back end ." section off General Menu.
We edit that Front and back end Settings and see that we can inject arbitrary Javascript code in the Pages field.
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In the following image you can see the embedded code that executes the payload in the main web.