skills.rest
vitoropereira
vitoropereiraCOMMUNITY
Explore all skills by this author →
WebsiteGitHub

IDOR Vulnerability Testing

Detect IDOR vulnerabilities in multi-tenant API endpoints by analyzing URL parameters and HTTP methods.

Updated Mar 2, 2026
Search Tags:#security#access control#penetration testing#vulnerability testing#api security#idor
One-click install
npx skills add https://github.com/vitoropereira/claude-starter-kit --skill idor-vulnerability-testing-vitoropereira
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: IDOR Vulnerability Testing
Source: https://github.com/vitoropereira/claude-starter-kit/tree/main/.claude/skills/security/idor-testing
Command: npx skills add https://github.com/vitoropereira/claude-starter-kit --skill idor-vulnerability-testing-vitoropereira

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps identify and test for Insecure Direct Object References (IDOR) vulnerabilities, a common security flaw that can lead to unauthorized data access in multi-tenant applications.

Core Features & Use Cases

  • Identify High-Risk Endpoints: Pinpoints API routes prone to IDOR vulnerabilities, especially those handling tenant-specific data.
  • Test Access Control: Verifies if users can access resources or perform actions outside their authorized scope.
  • Methodology Guidance: Provides systematic steps for detecting IDORs through URL manipulation, request body changes, and HTTP method switching.
  • Use Case: A security analyst can use this skill to systematically probe an application for weaknesses where a user might be able to view or modify another user's data by simply changing an ID in the request.

Quick Start

Test the '/api/resources/[id]' endpoint for insecure direct object references by incrementing the resource ID.

Frequently Asked Questions about IDOR Vulnerability Testing

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

FAQPage Schema
What is an IDOR vulnerability and how does it affect API security?▼

An IDOR vulnerability occurs when broken access control in API endpoints allows unauthorized users to access or modify tenant-specific data by manipulating URL parameters or request bodies. This security flaw leads to insecure direct object references and data isolation failures in multi-tenant applications.

How do I test for IDOR vulnerabilities in multi-tenant applications?▼

Test for IDOR vulnerabilities by systematically probing API endpoints through URL parameter manipulation, request body changes, and HTTP method switching. Verify access control by incrementing resource IDs to check if users can view or modify another tenant's data outside their authorized scope.

Can I use penetration testing to detect broken access control in API endpoints?▼

Yes, penetration testing detects broken access control by analyzing API routes for insecure direct object references. This methodology verifies if users can perform actions outside their authorized scope, pinpointing high-risk endpoints handling tenant-specific data that lack proper RBAC enforcement.

What is the best way to fix IDOR vulnerabilities and enforce secure data isolation?▼

The best way to fix IDOR vulnerabilities is by applying remediation patterns for secure data isolation and enforcing Role-Based Access Control (RBAC). Securing API endpoints prevents unauthorized users from accessing resources by manipulating URL parameters or request bodies.

Does IDOR testing work with different HTTP methods and request body parameters?▼

Yes, IDOR testing works by switching HTTP methods and altering request body parameters to identify broken access control. This systematic methodology verifies whether changing object references in API requests allows unauthorized access to tenant-specific data outside a user's scope.

Related Skills

Explore More Software Engineering Skills→
antgroupantgroup
34

pentest-access-control

Identifies and validates web/API authorization vulnerabilities including RBAC bypass and privilege escalation.

Official
Advanced
tan-yong-shengtan-yong-sheng
1

access-control-policy-design

Design access control policies using RBAC, ABAC, PBAC, and ReBAC patterns.

Community
Advanced
jinyimeng01jinyimeng01
54

api-fuzz

Select semantic fuzzing payloads for API parameters based on attack patterns.

Community
Intermediate
latestaiagentslatestaiagents
5

access-control-audit

Audit applications for OWASP A05 broken access control vulnerabilities.

Official
Advanced