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pentest-race-conditions

Concurrency exploitation — race conditions, TOCTOU vulnerabilities, and parallel request abuse in web applications.

skills/pentest-race-conditions/SKILL.md

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# Pentest Race Conditions

## Purpose
Exploit applications that fail to handle concurrent requests atomically — enabling double-spend, limit bypass, privilege escalation through parallel requests. Absent from standard WSTG categories but critical in real-world assessments.

## Prerequisites

### Authorization Requirements
- **Written authorization** with explicit scope for concurrency testing
- **Test accounts** with balances, quotas, or limited-use resources
- **Rollback plan** for financial or state-mutating operations
- **Rate limit awareness** — confirm acceptable burst volume with target owner

### Environment Setup