XSSNow is a community-driven, curated knowledge base of Cross-Site Scripting (XSS) payloads, designed to help security researchers, bug bounty hunters, and learners quickly find relevant, real-world payloads for different XSS scenarios.
Cross-Site Scripting (XSS) vulnerabilities remain one of the most prevalent security threats in modern web applications. Security researchers, penetration testers, and bug bounty hunters face constant challenges:
- Scattered Knowledge - XSS payloads are buried across blogs, forums, and personal notes
- Context Confusion - Not knowing which payload works in specific injection contexts
- Defense Evolution - Modern WAFs and filters require increasingly sophisticated bypass techniques
- Learning Curve - Beginners struggle to understand why certain payloads work while others fail
- Time Pressure - Security testing demands quick access to relevant, working payloads
XSSNow transforms the chaotic landscape of XSS exploitation into a structured, intelligent arsenal. We've built more than just a payload database - we've created an ecosystem that understands context, evolves with defenses, and accelerates discovery.
- Context-Aware Categorization - Payloads organized by injection context, not just syntax
- Defense-Focused Grouping - Specific collections for WAF bypasses, encoding evasions, and filter circumvention
- Difficulty Progression - From beginner-friendly basics to expert-level polyglots
- Real-World Testing - Every payload validated against actual applications and defense mechanisms
- Smart Context Detection - Understands where your injection point sits in the application flow
- Restriction-Aware Suggestions - Adapts to character limitations, encoding constraints, and input filters
- WAF-Specific Optimization - Tailored bypass techniques for major firewall vendors
- Custom Length Optimization - Generates payloads within strict character limits
- CSP Bypass Techniques - Navigate Content Security Policy restrictions with confidence
- Encoding Evasion - Break through HTML entity encoding, URL encoding, and custom sanitizers
- Filter Circumvention - Proven methods to bypass keyword blacklists and regex filters
- Browser Quirks - Leverage parser differences across modern browser engines
| Traditional Approach | XSSNow Advantage |
|---|---|
| Static payload lists | Dynamic, context-aware generation |
| Generic collections | Defense-specific categorization |
| Copy-paste mentality | Educational understanding |
| Outdated techniques | Real-time effectiveness tracking |
| Isolated research | Community-driven validation |
Visit xssnow.in and start exploring immediately. No installation required.
- HTML Injection - Direct markup insertion and tag manipulation
- Attribute Breaking - Escaping from HTML attributes and event handlers
- JavaScript Context - String breaking and code execution within JS
- CSS Injection - Style-based attacks and expression exploitation
- URL Parameters - Query string and fragment-based vectors
- WAF Bypasses - Techniques for major firewall vendors
- Encoding Evasions - Character set manipulation and obfuscation
- Filter Circumvention - Keyword blacklist and regex bypass
- CSP Violations - Content Security Policy escape techniques
- Polyglot Attacks - Multi-context universal payloads
XSSNow thrives on community collaboration. Whether you're discovering new bypass techniques, improving existing payloads, or sharing knowledge - your contributions drive the platform forward.
- Submit Payloads - Share your latest discoveries and bypass techniques
- Improve Documentation - Help others understand complex attack vectors
- Test Effectiveness - Validate payloads against real-world applications
- Share Knowledge - Write tutorials and educational content
- Report Issues - Help us maintain platform quality
→ Read our Contributing Guidelines
Do NOT use these payloads on systems you do not own or have explicit permission to test.
Licensed under the MIT License - empowering open security research while maintaining responsible usage standards.
Built with ❤️ by Sid Joshi (@dr34mhacks)
If XSS helped you once, XSSNow is here to help you every time. 🛡️
