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Home/CWEs/A04:2021
OWASP Top 10 Category

A04:2021: Insecure Design

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Risks from missing or ineffective security design — flaws that no perfect implementation can fix because the design itself is unsafe.

Abstraction
Category
OWASP Top 10
A04:2021 (#4)
Related CVEs
28

▪ Weakness classes in this category

CWE-434CWE-362

▪ References & documentation

https://owasp.org/Top10/OWASP A04:2021 categoryOWASP Cheat Sheet Series

▪ Related CVEs

CVE-2021-45710High

Security vulnerability in tokio

CVE-2020-35914Medium

Security vulnerability in lock_api

CVE-2021-45710High

Security vulnerability in tokio

CVE-2021-45710High

Security vulnerability in tokio

CVE-2021-38191Medium

Security vulnerability in tokio

CVE-2022-40896Medium

Security vulnerability in pygments

CVE-2020-35911Medium

Security vulnerability in lock_api

CVE-2024-23651High

Security vulnerability in buildkit

CVE-2022-40896Medium

Security vulnerability in pygments

CVE-2025-32441Medium

Security vulnerability in rack

CVE-2026-25674Low

Security vulnerability in django

CVE-2026-59896Medium

Security vulnerability in hono

CVE-2026-59896Medium

Security vulnerability in hono

CVE-2021-29281Critical

Security vulnerability in archiver

CVE-2026-46727High

Security vulnerability in ruby

CVE-2026-32887High

Security vulnerability in effect

CVE-2015-3081Medium

Security vulnerability in air

CVE-2015-5191Medium

Security vulnerability in tools

CVE-2017-20004Medium

Security vulnerability in rust

CVE-2026-32887High

Security vulnerability in effect

CVE-2010-5298Medium

Security vulnerability in openssl

CVE-2015-1791Medium

Security vulnerability in openssl

CVE-2020-36442High

Security vulnerability in beef

CVE-2010-5298Medium

Security vulnerability in openssl

CVE-2015-1791Medium

Security vulnerability in openssl

GHSA-mjgh-79qc-68w3Low

Security vulnerability in django

CVE-2022-40896Medium

Security vulnerability in pygments

CVE-2015-3081Medium

Security vulnerability in air