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pentest-business-logic

Test web applications for business logic, race condition, and denial-of-service vulnerabilities.

74|10|Updated Mar 5, 2026
Search Tags:#penetration testing#race condition#business logic#web application security#denial of service#ReDoS
One-click install
npx skills add https://github.com/yhy0/ghsa-skill-builder --skill pentest-business-logic-yhy0
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: pentest-business-logic
Source: https://github.com/yhy0/ghsa-skill-builder/tree/main/vuln-skills/skills/pentest-business-logic
Command: npx skills add https://github.com/yhy0/ghsa-skill-builder --skill pentest-business-logic-yhy0

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps penetration testers identify and exploit critical business logic flaws, race conditions, and denial-of-service vulnerabilities in web applications.

Core Features & Use Cases

  • Business Logic Testing: Discover flaws in payment, coupon, and workflow systems.
  • Race Condition Exploitation: Identify and exploit TOCTOU vulnerabilities.
  • Denial of Service: Test for ReDoS, HTTP/2 DoS, and application-level resource exhaustion.
  • Use Case: When testing an e-commerce site, use this Skill to check if discount codes can be stacked or if a payment can be processed multiple times concurrently.

Quick Start

Use the pentest-business-logic skill to test for race conditions in the checkout API.

Frequently Asked Questions about pentest-business-logic

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

FAQPage Schema
How do I test for race conditions in web application checkout APIs?▼

Testing for race conditions in web application checkout APIs involves identifying TOCTOU vulnerabilities by sending concurrent requests to detect if payments or transactions process multiple times.

What is a business logic flaw in financial transaction systems?▼

A business logic flaw in financial transaction systems is a weakness in payment or coupon workflows that allows workflow bypasses, enabling discount code stacking or unauthorized payment processing.

How do I detect ReDoS and HTTP/2 denial of service vulnerabilities?▼

Detect ReDoS and HTTP/2 denial of service vulnerabilities by testing web applications for application-level resource exhaustion vectors, analyzing real-world attack patterns to identify weaknesses.

Can I use this to check if e-commerce discount codes can be stacked?▼

Yes, you can check if e-commerce discount codes can be stacked by testing coupon systems for business logic flaws, focusing on identifying weaknesses in discount and workflow validation.

What are the limitations of testing business logic vulnerabilities in web applications?▼

Limitations of testing business logic vulnerabilities include the challenge of analyzing unique application workflows and resource exhaustion vectors, requiring comprehensive detection checklists tailored to specific financial transaction patterns.

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