Exercises

Exercise Avg. Time Difficulty Solved by Tier
CVE-2025-XX953
This challenge covers the review of a CVE in a typescript codebase and its patch
hard 116 PRO
CVE-2026-XX871
This challenge covers the review of a CVE in a python codebase and its patch
hard 106 PRO
JWT: Signature Leak
This exercise covers exploiting a JWT signature leak to forge authentication tokens.
< 1 Hr. easy 82 PRO
CVE-2026-24895: FrankenPHP Path Confusion RCE using Unicode < 1 Hr. hard 26 PRO
JWT: Invalid Algorithm
This exercise covers exploiting JWT algorithm validation flaws to bypass signature verification.
< 1 Hr. easy 81 PRO
CVE-2025-XX864
This challenge covers the review of a CVE in a typescript codebase and its patch
< 1 Hr. hard 112 PRO
CVE-2026-XX888
This challenge covers the review of a CVE in a typescript codebase and its patch
hard 109 PRO
CVE-2026-XX050
This challenge covers the review of a CVE in a typescript codebase and its patch
hard 99 PRO
CVE-2021-437XX
This challenge covers the review of a CVE in a JavaScript codebase and its patch
hard 145 PRO
CVE-2021-X27X0
This challenge covers the review of a CVE in a JavaScript codebase and its patch
hard 128 PRO
CVE-2020-XX079
This challenge covers the review of a CVE in a javascript codebase and its patch
< 1 Hr. hard 182 PRO
CVE-2024-XX3X9
This challenge covers the review of a CVE in a python codebase and its patch
< 1 Hr. hard 91 PRO
CVE-2026-XXX50
This challenge covers the review of a CVE in a python codebase and its patch
hard 105 PRO
CVE-2025-XXX57
This challenge covers the review of a CVE in a python codebase and its patch
< 1 Hr. hard 123 PRO
CVE-2025-6X5X7
This challenge covers the review of a CVE in a python codebase and its patch
hard 126 PRO
CVE-2025-0X6X
This challenge covers the review of a CVE in a python codebase and its patch
< 1 Hr. hard 168 PRO
CVE-2024-X68X
This challenge covers the review of a CVE in a python codebase and its patch
< 1 Hr. hard 149 PRO
CVE-2023-2758X
This challenge covers the review of a CVE in a golang codebase and its patch
< 1 Hr. hard 86 PRO
CVE-202X-15X7
This challenge covers the review of a CVE in a golang codebase and its patch
< 1 Hr. hard 79 PRO
CVE-2017-1XX74
This challenge covers the review of a CVE in a golang codebase and its patch
< 1 Hr. hard 114 PRO
CVE-2025-627X0
This challenge covers the review of a CVE in a java codebase and its patch
< 1 Hr. hard 116 PRO
CVE-2025-NOID
This challenge covers the review of a CVE in a java codebase and its patch
< 1 Hr. hard 113 PRO
CVE-2022-2X457
This challenge covers the review of a CVE in a java codebase and its patch
< 1 Hr. hard 128 PRO
Latex: --shell-escape
This exercise covers how one can leverage latex when pdflatex is used with the --shell-escape option to gain command execution.
< 1 Hr. medium 67 PRO
Golang Code Review #07
This challenge covers the review of a snippet of code written in Golang.
< 1 Hr. hard 101 PRO
CVE-2025-X215X
This challenge covers the review of a CVE in a golang codebase and its patch
< 1 Hr. hard 83 PRO
CVE-2025-X93X0
This challenge covers the review of a CVE in a golang codebase and its patch
< 1 Hr. hard 76 PRO
CVE-2025-X942X
This challenge covers the review of a CVE in a python codebase and its patch
< 1 Hr. hard 138 PRO
CVE-2025-6X85
This challenge covers the review of a CVE in a python codebase and its patch
< 1 Hr. hard 144 PRO
CVE-2025-6X9X2
This challenge covers the review of a CVE in a python codebase and its patch
hard 126 PRO
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Showing 121–150 of 805 exercises