XSS Payload Tester
Test and analyze cross-site scripting (XSS) payloads in a secure environment. Learn about XSS vulnerabilities and protection mechanisms.
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XSS Payload Tester
Press Ctrl + Enter to test
Features
A comprehensive tool for testing and understanding XSS vulnerabilities safely.
Safe Testing Environment
Test XSS payloads in a secure, sandboxed environment
Sample Payloads
Pre-built collection of common XSS vectors
Pattern Detection
Identify common XSS patterns and techniques
Payload Categories
Organized by attack type and complexity
Security Analysis
Understand payload detection and filtering
Risk Assessment
Evaluate potential security implications
Educational Resource
Learn about XSS vulnerabilities and prevention
Preview Rendering
See how payloads might appear in a browser
How to Use
Simple 4-step process
Step 1
Enter an XSS payload or select from sample payloads
Step 2
Test the payload to see how it might be detected
Step 3
View the rendered output in a safe sandbox
Step 4
Analyze detection patterns and security implications
Frequently Asked Questions about XSS Testing
Everything you need to know about our process, pricing, and technical capabilities.
See Full FAQCross-Site Scripting (XSS) is a security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. These scripts can steal data, impersonate users, or deface websites.
Yes! This tool provides a sandboxed environment where scripts are blocked from executing. It's designed for educational purposes and security testing. However, always ensure you have permission before testing on actual websites.
There are three main types of XSS attacks: Reflected XSS (payload in URL/input is reflected back), Stored XSS (payload is stored in database and served later), and DOM-based XSS (payload executes through client-side JavaScript).
Key prevention methods include: proper input validation, output encoding, using Content Security Policy (CSP), implementing HTTPOnly cookies, and using modern framework security features. Always sanitize user input and encode output appropriately.
Common bypass techniques include: HTML entity encoding, JavaScript escaping, case manipulation, alternative attribute quotes, and nested expressions. However, proper security measures should focus on comprehensive input validation and output encoding.
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