Penetration Testing, Security Code Review and Web App Security Exercises

Free PRO CVE Easy Medium Hard XSS Code Review API SSRF HTTP RECON CSRF SQLi

Exercise	Avg. Time	Solved by	Tier
CVE-2025-XXX57 This challenge covers the review of a CVE in a python codebase and its patch	< 1 Hr.	55	PRO
Java Code Review 04 This challenge covers the review of a simple codebase in Java	< 1 Hr.	200	PRO
Java Code Review 02 This challenge covers the review of a simple codebase in Java	< 1 Hr.	245	PRO
Java Code Review 05 This challenge covers the review of a simple codebase in Java	< 1 Hr.	203	PRO
CVE-2026-X189X This challenge covers the review of a CVE in a python codebase and its patch	< 1 Hr.	40	PRO
CVE-2025-XX662 This challenge covers the review of a CVE in a python codebase and its patch	--	38	PRO
CVE-2023-5143X This challenge covers the review of a CVE in a Java codebase and its patch	1-2 Hr.	236	PRO
CVE-2025-XX864 This challenge covers the review of a CVE in a typescript codebase and its patch	< 1 Hr.	62	PRO
CVE-2025-XX953 This challenge covers the review of a CVE in a typescript codebase and its patch	--	48	PRO
CVE-2026-2413X This challenge covers the review of a CVE in a python codebase and its patch	< 1 Hr.	30	PRO
CVE-2026-21XX3 This challenge covers the review of a CVE in a Python codebase and its patch	< 1 Hr.	29	PRO
CVE-2026-XX951 This challenge covers the review of a CVE in a javascript codebase and its patch	--	45	PRO
Python Code Review 03 This challenge covers the review of a simple codebase in Python	< 1 Hr.	190	PRO
Java Code Review 07 This challenge covers the review of a simple codebase in Java	< 1 Hr.	168	PRO
CVE-2026-XX953 This challenge covers the review of a CVE in a python codebase and its patch	--	0	PRO
Java Code Review 06 This challenge covers the review of a simple codebase in Java	< 1 Hr.	195	PRO
CVE-2017-1XX74 This challenge covers the review of a CVE in a golang codebase and its patch	--	44	PRO
CVE-2026-XXX50 This challenge covers the review of a CVE in a python codebase and its patch	--	56	PRO
CVE-2020-XX079 This challenge covers the review of a CVE in a javascript codebase and its patch	< 1 Hr.	88	PRO
Python Code Review 05 This challenge covers the review of a simple codebase in Python	--	139	PRO
Python Code Review 02 This challenge covers the review of a simple codebase in Python	--	207	PRO
Java Code Review 08 This challenge covers the review of a simple codebase in Java	< 1 Hr.	171	PRO
Java Code Review 03 This challenge covers the review of a simple codebase in Java	< 1 Hr.	216	PRO
CVE-2026-XX050 This challenge covers the review of a CVE in a typescript codebase and its patch	--	49	PRO
Java Code Review 09 This challenge covers the review of a simple codebase in Java	< 1 Hr.	146	PRO
Python Code Review 01 This challenge covers the review of a simple codebase in Python	< 1 Hr.	239	PRO
CVE-2026-XX888 This challenge covers the review of a CVE in a typescript codebase and its patch	--	58	PRO
CVE-2009-387X This challenge covers the review of a CVE in a Java codebase and its patch	< 1 Hr.	266	PRO
Java Code Review 01 This challenge covers the review of a simple codebase in Java	< 1 Hr.	244	PRO
CVE-2026-XX871 This challenge covers the review of a CVE in a python codebase and its patch	--	40	PRO

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Showing 1–30 of 704 exercises