All Security Checks
Vulnerability DetectionA03:2021A04:2021

Input Validation Scanner

Test form fields and API inputs for proper validation and sanitization.

Improper input validation is the root cause of most injection vulnerabilities. Our scanner tests all input vectors — forms, URL parameters, headers, and JSON bodies — for proper validation, length limits, type checking, and sanitization.

What This Scanner Does

Submits various malformed inputs to forms and API endpoints including oversized strings, special characters, null bytes, Unicode edge cases, and type mismatches. Checks whether the application properly validates, sanitizes, and rejects invalid input.

Why It Matters

Every injection vulnerability — SQL injection, XSS, command injection, path traversal — stems from insufficient input validation. Proper validation at the application boundary is the most effective defense against the entire class of injection attacks.

Common Findings

  • No input length limits on form fields
  • Special characters not sanitized in text inputs
  • Missing server-side validation (client-only)
  • Type coercion vulnerabilities in API parameters

OWASP Top 10 Coverage

A03:2021Injection
A04:2021Insecure Design

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