unrestricted-file-upload-anti-pattern

What problem does it solve?

This Skill prevents attackers from uploading malicious files (like web shells) to your application by enforcing strict validation on file types, sizes, and content.

Core Features & Use Cases

• Vulnerability Detection: Identifies insecure file upload implementations.
• Secure Coding Guidance: Provides examples of how to properly validate and handle uploaded files.
• Use Case: When reviewing code that handles user uploads, use this Skill to ensure that only permitted file types are accepted and that no dangerous files can be executed on the server.

Quick Start

Review the current file upload functionality for unrestricted file upload vulnerabilities.