Individual skill
exploiting-mass-assignment-in-rest-apis
Discovers and exploits mass assignment (autobinding) in REST APIs by injecting unexpected or hidden parameters (e.g. role, isAdmin, plan) into create/update requests, using Burp Suite Intruder, Arjun, and param-miner to find bindable fields on ORM-backed endpoints (Rails, Django, Laravel, Spring). Use when testing REST APIs for privilege escalation or authorization bypass via unintended parameter binding.
skills/exploiting-mass-assignment-in-rest-apis/SKILL.md
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- Last checked
- Nov 9, 2026
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- Repository stars (not skill ratings)
- 35,858
- Repository last updated
- Aug 31, 2026
- License
- Apache-2.0
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- ai-agents Repository topic
- claude-code Repository topic
- cybersecurity Repository topic
- incident-response Repository topic
- mitre-attack Repository topic
- penetration-testing Repository topic
- red-team Repository topic
- security Repository topic
- cloud-security Repository topic
- malware-analysis Repository topic
- mass-assignment Declared skill tag
- api-security Declared skill tag
- privilege-escalation Declared skill tag
- rest-api Declared skill tag
- autobinding Declared skill tag
- parameter-injection Declared skill tag
- owasp-api Declared skill tag
- security Derived category
- testing Derived category
- engineering Derived category
- security-application Derived category
- engineering-web Derived category
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# Exploiting Mass Assignment in REST APIs
## When to Use
- When testing REST APIs that accept JSON input for creating or updating resources
- During API security assessments of applications using ORM frameworks (Rails, Django, Laravel, Spring)
- When testing user registration, profile update, or account management endpoints
- During bug bounty hunting on applications with CRUD API operations
- When evaluating role-based access control implementation in API-driven applications
## Prerequisites
- Burp Suite or Postman for API request crafting and interception
- Understanding of ORM auto-binding behavior in common frameworks
- API documentation or endpoint discovery through reconnaissance
- Multiple user accounts with different privilege levels for testing