prototype-pollution

Detect and exploit JavaScript prototype pollution vulnerabilities in Node.js applications.

7|1|Updated Apr 14, 2026

Search Tags:#Node.js #javascript #vulnerability analysis #remote code execution #prototype pollution

Ready to run

npx skills add https://github.com/ArianHobson333/claude-bug-bounty-stack --skill prototype-pollution-arianhobson333

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: prototype-pollution
Source: https://github.com/ArianHobson333/claude-bug-bounty-stack/tree/main/vendor/Decepticon/skills/analyst/prototype-pollution
Command: npx skills add https://github.com/ArianHobson333/claude-bug-bounty-stack --skill prototype-pollution-arianhobson333

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires deepmerge-detector, protodeTECT, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill enables security analysts to identify and exploit prototype pollution vulnerabilities (CWE-1321) in JavaScript environments within Node.js applications.

Core Features & Use Cases

Prototype Pollution Detection: Scan for common vulnerabilities in libraries and application code that could be exploited.
Exploitation Framework: Provides templates and strategies for chaining prototype pollution vulnerabilities into remote code execution.
Automated Auditing: Offers a command-line interface for automating the identification of prototype pollution within applications.

Quick Start

To detect potential prototype pollution in your Node.js app, run 'protodeTECT' to identify deep merge function usage and potential user-controlled object sources.

Frequently Asked Questions about prototype-pollution

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I detect prototype pollution vulnerabilities in Node.js applications?▼

To detect prototype pollution in Node.js applications, run the 'protodeTECT' dependency to identify deep merge function usage and trace potential user-controlled object sources. This allows security analysts to scan for common library and application code vulnerabilities automatically.

What is prototype pollution and how does it lead to remote code execution in JavaScript?▼

Prototype pollution is a vulnerability where attackers modify the prototype of base JavaScript objects, often via deep merge functions. This Skill provides exploitation strategies and templates for chaining this CWE-1321 vulnerability into remote code execution within a Node.js runtime environment.

Can I automate auditing for CWE-1321 in my application codebase?▼

Yes, you can automate auditing for CWE-1321 using the provided command-line interface. It automates the identification of prototype pollution by analyzing known vulnerable libraries and application code patterns in your target codebase efficiently.

Do I need to understand the Node.js runtime to use this vulnerability analysis tool?▼

Yes, understanding the Node.js runtime and application security is required. This Skill is designed for security analysts and requires prerequisite knowledge of JavaScript environments to properly identify and exploit prototype pollution vulnerabilities effectively.

What's the best way to identify deep merge function usage for prototype pollution?▼

The best way to identify deep merge function usage is by running the 'protodeTECT' component. It specifically traces potential user-controlled object sources interacting with deep merge functions to pinpoint CWE-1321 vulnerabilities accurately.