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idor-vulnerability-testing

Identify and verify insecure direct object reference vulnerabilities in web applications.

Updated Jan 11, 2026
Search Tags:#authorization#vulnerability#access-control#web-application#security-testing#idor
One-click install
npx skills add https://github.com/mv-debug/kyco --skill idor-vulnerability-testing-mv-debug
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: idor-vulnerability-testing
Source: https://github.com/mv-debug/kyco/tree/main/.claude/skills/idor-vulnerability-testing
Command: npx skills add https://github.com/mv-debug/kyco --skill idor-vulnerability-testing-mv-debug

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Insecure Direct Object Reference (IDOR) vulnerabilities allow attackers to access or manipulate data without proper authorization. This skill provides a structured approach to identify, reproduce, and remediate IDOR flaws in web applications.

Core Features & Use Cases

  • Threat modeling and reconnaissance to locate IDOR entry points in API endpoints and static resources.
  • Detection techniques and testing workflows to validate access controls using parameter manipulation, ID enumeration, and file reference testing.
  • Remediation guidance with defense-in-depth recommendations such as indirect references, server-side ownership checks, and strict access controls.
  • Use Case: A security engineer performs an authorized test to confirm that changing a userId or object id does not grant access to another user’s data.

Quick Start

Initiate a sanctioned IDOR test plan against your web application by enumerating object references, manipulating IDs in API and file endpoints, and recording access outcomes for remediation.

Frequently Asked Questions about idor-vulnerability-testing

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

FAQPage Schema
What is an insecure direct object reference vulnerability in web applications?▼

An insecure direct object reference (IDOR) vulnerability occurs when web applications use direct object references, allowing attackers to manipulate parameters like userId to bypass authorization and access other users' data.

How do I test for IDOR vulnerabilities in API endpoints?▼

Test IDOR vulnerabilities by enumerating object references, manipulating IDs in API endpoints, and recording access outcomes to validate whether changing object IDs grants unauthorized access to another user's data.

How do I check for authorization bypass on static resources and file references?▼

Check authorization bypass by applying testing workflows to file reference scenarios, manipulating static resource parameters, and verifying if server-side ownership checks prevent unauthorized file access.

What is the best way to remediate IDOR flaws and lock down access control?▼

Remediate IDOR flaws by implementing defense-in-depth recommendations such as indirect references, strict server-side ownership checks, and robust access controls to prevent authorization bypass scenarios.

Can I use this IDOR testing workflow for user data and file references across both APIs and static resources?▼

Yes, the IDOR testing workflow applies to authorization-bypass scenarios across user data and file references, covering both API endpoints and static resources with structured evidence collection.

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