Unrestricted File Upload Scanner
Detects dangerous file upload capabilities allowing malicious file execution.
What is Unrestricted File Upload?
Unrestricted file upload occurs when applications allow users to upload files without proper restrictions on file types, sizes, or storage locations. This can lead to uploading web shells, malware, or content that exploits vulnerabilities in file processing libraries.
Why is This Important?
Unrestricted uploads are a direct path to remote code execution. Uploading a PHP/JSP/ASP web shell to an executable location gives attackers complete server control. Even non-executable files can enable XSS or exploit file parsing vulnerabilities.
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 makes an upload 'unrestricted'?
No file type validation, files stored in web-accessible executable locations, original filenames preserved, and no size limits or content verification.
Beyond code execution, what else can go wrong?
XSS via HTML/SVG uploads, DoS via large file uploads filling disk, ZIP bombs, malicious files exploiting parsing libraries (ImageMagick, FFmpeg), and overwriting critical files.
What's a web shell?
A script (PHP, JSP, ASP) that provides command execution interface via web. Once uploaded to an executable location, attackers can run system commands through their browser.
How should file uploads be implemented securely?
Whitelist allowed types, verify content (not just extension), store outside webroot, use random filenames, scan for malware, and set size limits.
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