HTTP Header Injection Scanner
Detects HTTP response splitting and header injection vulnerabilities.
What is HTTP Header Injection?
HTTP header injection occurs when user input is placed into HTTP response headers without sanitization. Attackers can inject CRLF sequences (\r\n) to add arbitrary headers or even create entirely new HTTP responses, enabling cache poisoning, XSS, and session fixation.
Why is This Important?
Header injection can set malicious cookies (session fixation), inject XSS via headers that get reflected, poison web caches to serve malicious content to all users, and bypass security headers.
How It Works
1. Web Crawling
Intelligent crawling discovers all endpoints, forms, parameters, and dynamic content across your web application.
2. Payload Injection
AI-powered payloads test each input vector for web vulnerabilities with context-aware attack patterns.
3. Response Analysis
Advanced analysis detects vulnerability signatures in responses, confirming exploitability with proof-of-concept.
Key Capabilities
Industry-leading web security testing powered by AI, trusted by security teams worldwide for accurate vulnerability detection.
- Deep web crawling with JavaScript rendering support
- Context-aware payload generation for each parameter
- False positive elimination through response analysis
- OWASP Top 10 and CWE compliance mapping
- Seamless CI/CD and DevSecOps integration
Frequently Asked Questions
What is response splitting?
By injecting CRLF sequences followed by a complete HTTP response, attackers can make the server return multiple responses. Proxies may cache the injected response for other users.
What headers are commonly injected?
Set-Cookie (session fixation), Location (redirects), Content-Type (XSS), and any header that affects browser behavior or caching.
Do modern frameworks prevent this?
Most modern web frameworks automatically sanitize header values, but custom header handling or older frameworks may still be vulnerable.
How does cache poisoning via headers work?
Attackers inject responses that get cached by CDNs or proxies. All subsequent users requesting that resource receive the attacker's malicious response.
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