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API access control testing overview

Access control vulnerabilities like IDOR, BOLA, and BFLA pose significant security risks in APIs, allowing unauthorized users to access, modify, or delete data that should be restricted. Invicti Platform provides comprehensive testing capabilities to automatically detect these vulnerabilities through multi-session scanning.

This document walks you through the complete process of testing for API access control vulnerabilities, from understanding the concepts to configuring your scans and interpreting results.

What this overview covers​

Three focused documents follow your testing journey:

Understand API access control vulnerabilities​

Start here if you're new to access control testing or need to understand the fundamentals:

  • What are BOLA, IDOR, and BFLA? - Clear definitions with real-world examples
  • Horizontal vs. vertical access control - Understanding the key differences and when each occurs
  • Why these vulnerabilities matter - Business and security impact
  • Common vulnerability patterns - How to spot potential issues in your APIs

Perfect for security teams, developers, and anyone who needs to understand the "why" behind access control testing.

Configure API authorization for access control testing​

Essential setup steps for configuring Invicti Platform to test your APIs effectively:

  • Supported authorization methods - API keys, Basic auth, Bearer tokens, and OAuth
  • Step-by-step credential configuration - Detailed instructions with screenshots
  • User account requirements - How to set up test users with appropriate privileges
  • Best practices and validation - Ensuring your setup detects vulnerabilities

Essential for anyone setting up access control testing in Invicti Platform for the first time.

Scan and troubleshoot API access control issues​

Operational guide for running scans and handling results:

  • How Invicti detects vulnerabilities - Multi-session scanning technical details
  • Understanding scan results - Interpreting findings and severity ratings
  • Troubleshooting common issues - Solutions for authentication, detection, and performance problems
  • Best practices for ongoing testing - Maintaining effective access control testing

Perfect for security engineers and testers actively running scans and managing results.

Prerequisites​

Before beginning access control testing, ensure you have:

  • An API target with its API specification imported or linked - see add an API target
  • Multiple test user accounts with different privilege levels
  • Authorization credentials configured in the target's Authentication settings - see IDOR/BOLA authentication
  • Basic understanding of your API's authentication methods

Why comprehensive access control testing matters​

Access control vulnerabilities consistently appear in the OWASP API Security Top 10, with BOLA ranking as the #1 API security risk. These vulnerabilities can lead to:

  • Data breaches - Unauthorized access to sensitive user information
  • Privacy violations - Exposure of personal or confidential data
  • Privilege escalation - Regular users gaining administrative access
  • Compliance issues - Violations of GDPR, PCI DSS, and other regulations
  • Business impact - Financial losses, reputation damage, and operational disruption

Invicti Platform's multi-session scanning approach helps you identify these critical vulnerabilities before attackers do.

How Invicti Platform helps​

Invicti Platform provides automated access control vulnerability detection through:

  • Multi-session scanning - Simultaneous testing with multiple user accounts
  • Comprehensive coverage - Detection of both horizontal and vertical access control issues
  • Multiple authentication methods - Support for API keys, Basic auth, Bearer tokens, and OAuth
  • Detailed reporting - Clear vulnerability descriptions with proof-of-concept data
  • Integration capabilities - Results integrate with your existing security workflow
Troubleshooting

For help interpreting scan results and resolving authentication or detection problems, refer to the Scan and troubleshoot API access control issues document.

Need help?​

Invicti Support team is ready to provide you with technical help. Go to Help Center

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