In the OWASP Top 10 (2021), which risk jumped to A01 and is now the most common cause of serious web issues?

Problem Statement

Explanation

Broken access control is number one because many apps fail to enforce ownership checks and authorization rules consistently. Typical signs are IDOR or BOLA issues, forced browsing to admin paths, and missing server-side checks. The OWASP Top 10 page highlights why this category moved to A zero one and why it maps to many CWEs across real apps.

Code Solution

SolutionRead Only

GET /api/invoices/12345  // served without verifying the user owns 12345

Practice Sets

This question appears in the following practice sets:

Web App: OWASP Core

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In the OWASP Top 10 (2021), which risk jumped to A01 and is now the most common cause of serious web issues?

Problem Statement

Explanation

Code Solution

Practice Sets

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Master Interviews Anywhere, Anytime

In the OWASP Top 10 (2021), which risk jumped to A01 and is now the most common cause of serious web issues?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Why is a written scope and Rules of Engagement mandatory before any ethical hacking test?

Which ordering matches the common PTES workflow?

In ethical hacking, what does “without authorization” generally imply for legality?

What is the purpose of a Safe Harbor clause in a vulnerability disclosure or bounty program?

Which activity is typically out of scope for standard penetration tests unless explicitly allowed?

More from Ethical hacking

Master Interviews
Anywhere, Anytime