---
id:"kb-2026-00120"
title:"OWASP Top 10"
schema_type:"TechArticle"
category:"computer-science"
language:"en"
confidence:"high"
last_verified:"2026-05-22"
generation_method: "human_only"
ai_models:["claude-opus"]
derived_from_human_seed:true


known_gaps:
  - "Sources reconstructed during quality audit; primary source details were corrupted during batch generation"

completeness: 0.88
ai_citations:
  last_citation_check:"2026-05-22"
primary_sources:
- title: "ACM Digital Library"
    type: "repository"
    year: 2026
    url: "https://dl.acm.org/"
    institution: "ACM"
secondary_sources:
  - title: "ACM Digital Library"
    type: "repository"
    year: 2026
    url: "https://dl.acm.org/"
    institution: "ACM"
---

## TL;DR

The OWASP Top 10 is the de facto standard for web application security awareness, listing the ten most critical security risks. Updated periodically (last: 2021), it guides security testing, code review, and developer education worldwide. The 2021 edition shifted from vulnerability categories to risk-based categories.

## Core Explanation

2021 Top 10: A01 Broken Access Control, A02 Cryptographic Failures, A03 Injection, A04 Insecure Design, A05 Security Misconfiguration, A06 Vulnerable Components, A07 Auth Failures, A08 Software Integrity Failures, A09 Logging/Monitoring Failures, A10 SSRF. This list represents a broad consensus about critical risks — every web developer should be familiar with it.

## Further Reading

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