CORS Misconfiguration Scanner
Identifies overly permissive CORS policies that expose sensitive data.
What is CORS Misconfiguration?
CORS (Cross-Origin Resource Sharing) misconfigurations occur when servers allow requests from unauthorized origins. Common issues include reflecting any origin, allowing null origin, overly broad wildcard patterns, and exposing credentials to untrusted origins.
Why is This Important?
CORS misconfigurations allow attackers to read sensitive data cross-origin, bypassing same-origin policy protections. Combined with credentials, attackers can access private user data, perform actions as users, and steal sensitive information.
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's the most dangerous CORS misconfiguration?
Reflecting arbitrary origins with Access-Control-Allow-Credentials: true. This allows any website to read authenticated responses, enabling complete account takeover.
Is 'Access-Control-Allow-Origin: *' dangerous?
It's risky for sensitive endpoints but can't be combined with credentials. The browser blocks credentialed requests when the wildcard is used, providing some protection.
What about 'null' origin?
Allowing 'null' origin is dangerous because sandboxed iframes and certain redirect scenarios send 'null' as origin, which attackers can leverage.
How do I configure CORS securely?
Explicitly whitelist trusted origins, never reflect arbitrary origins with credentials, validate origin against a strict allowlist, and avoid null origin unless absolutely necessary.
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