HTTP Parameter Pollution Scanner
Tests for parameter pollution vulnerabilities in request handling.
What is HTTP Parameter Pollution?
HTTP Parameter Pollution (HPP) exploits how applications handle duplicate parameters. When multiple parameters with the same name are submitted (?id=1&id=2), different components may use different values, leading to WAF bypass, access control bypass, or logic errors.
Why is This Important?
HPP can bypass security controls that validate one value while the application uses another. It's used to bypass WAFs, manipulate application logic, and evade input validation by splitting malicious input across multiple parameters.
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
How do different technologies handle duplicates?
PHP uses the last value, ASP.NET concatenates with comma, Apache Tomcat uses the first, and Node.js may return an array. This inconsistency enables attacks.
How does HPP bypass WAFs?
WAFs may validate the first occurrence while the application uses the last. Splitting attack payloads across duplicate parameters can bypass pattern matching.
What's server-side HPP?
When applications construct URLs with user input and append parameters, attackers can inject additional parameters that override intended values in backend requests.
How do I prevent HPP vulnerabilities?
Be explicit about which value to use when duplicates exist, validate all occurrences of parameters, and avoid constructing URLs with unsanitized user input.
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