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Cross-site Scripting occurrences in Hot Scripts Clone
PHP Scripts Mall Hot Scripts Clone:Script Classified Version 3.1 Application is vulnerable to stored XSS within the "Add New" function for a Management User. Within the "Add New" section, the application does not sanitize user supplied input to the name parameter, and renders injected JavaScript code to the user's browser. This is different from CVE-2018-6878. (2018-03-06, CVE-2018-7650)
Cross Site Scripting (XSS) exists in the review section in PHP Scripts Mall Hot Scripts Clone Script Classified 3.1 via the title or description field. (2018-02-09, CVE-2018-6878)
Why Cross-site Scripting can be dangerous
Cross site scripting is an attack where a web page executes code that is injected by an adversary. It usually appears, when users input is presented. This attack can be used to impersonate a user, take over control of the session, or even steal API keys.
The attack can be executed e.g. when you application injects the request parameter directly into the HTML code of the page returned to the user:
https://server.com/confirmation?message=Transaction+Complete
what results in:
<span>Confirmation: Transaction Complete</span>
In that case the message can be modified to become a valid Javascript code, e.g.:
https://server.com/confirmation?message=<script>dangerous javascript code here</script>
and it will be executed locally by the user's browser with full access to the user's personal application/browser data:
<span>Confirmation: <script>dangerous javascript code here</script></span>