Exercises
| Exercise | Avg. Time | Difficulty | Solved by | Tier | |
|---|---|---|---|---|---|
|
JWT: Refresh Token Bypass
This exercise covers bypassing JWT refresh token validation to maintain unauthorized access.
|
< 1 Hr. |  |
63 | PRO |
|
CVE-2026-2413X
This challenge covers the review of a CVE in a python codebase and its patch
|
< 1 Hr. |  |
65 | PRO |
|
|
CVE-2026-21XX3
This challenge covers the review of a CVE in a Python codebase and its patch
|
< 1 Hr. | |
64 | PRO |
|
|
CVE-2023-3X829
This challenge covers the review of a CVE in a Python codebase and its patch
|
-- | |
81 | PRO |
|
|
CVE-2025-X23XX
This challenge covers the review of a CVE in a javascript codebase and its patch
|
-- | |
87 | PRO |
|
|
CVE-2025-X9X28
This challenge covers the review of a CVE in a typescript codebase and its patch
|
-- | |
84 | PRO |
|
|
CVE-2024-X170X
This challenge covers the review of a CVE in a JavaScript codebase and its patch
|
-- | |
102 | PRO |
|
|
CVE-2025-XX953
This challenge covers the review of a CVE in a typescript codebase and its patch
|
-- | |
97 | PRO |
|
|
CVE-2025-XX662
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
99 | PRO |
|
|
CVE-2026-X189X
This challenge covers the review of a CVE in a python codebase and its patch
|
< 1 Hr. | |
99 | PRO |
|
|
CVE-2026-XX951
This challenge covers the review of a CVE in a javascript codebase and its patch
|
-- | |
87 | PRO |
|
|
CVE-2025-625X8
This challenge covers the review of a CVE in a javascript codebase and its patch
|
-- | |
112 | PRO |
|
|
CVE-2026-XX871
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
92 | PRO |
|
|
JWT: Signature Leak
This exercise covers exploiting a JWT signature leak to forge authentication tokens.
|
< 1 Hr. | |
72 | PRO |
|
CVE-2026-24895: FrankenPHP Path Confusion RCE using Unicode | < 1 Hr. | |
23 | PRO |
|
|
JWT: Invalid Algorithm
This exercise covers exploiting JWT algorithm validation flaws to bypass signature verification.
|
< 1 Hr. | |
69 | PRO |
|
|
CVE-2026-XX050
This challenge covers the review of a CVE in a typescript codebase and its patch
|
-- | |
85 | PRO |
|
|
CVE-2026-XX888
This challenge covers the review of a CVE in a typescript codebase and its patch
|
-- | |
95 | PRO |
|
|
CVE-2025-XX864
This challenge covers the review of a CVE in a typescript codebase and its patch
|
< 1 Hr. | |
99 | PRO |
|
|
CVE-2021-437XX
This challenge covers the review of a CVE in a JavaScript codebase and its patch
|
-- | |
129 | PRO |
|
|
CVE-2021-X27X0
This challenge covers the review of a CVE in a JavaScript codebase and its patch
|
-- | |
111 | PRO |
|
|
CVE-2020-XX079
This challenge covers the review of a CVE in a javascript codebase and its patch
|
< 1 Hr. | |
157 | PRO |
|
|
CVE-2024-XX3X9
This challenge covers the review of a CVE in a python codebase and its patch
|
< 1 Hr. | |
80 | PRO |
|
|
CVE-2025-XXX57
This challenge covers the review of a CVE in a python codebase and its patch
|
< 1 Hr. | |
109 | PRO |
|
|
CVE-2026-XXX50
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
94 | PRO |
|
|
CVE-2024-X68X
This challenge covers the review of a CVE in a python codebase and its patch
|
< 1 Hr. | |
134 | PRO |
|
|
CVE-2025-0X6X
This challenge covers the review of a CVE in a python codebase and its patch
|
< 1 Hr. | |
150 | PRO |
|
|
CVE-2025-6X5X7
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
115 | PRO |
|
|
CVE-2017-1XX74
This challenge covers the review of a CVE in a golang codebase and its patch
|
-- | |
99 | PRO |
|
|
CVE-2023-2758X
This challenge covers the review of a CVE in a golang codebase and its patch
|
< 1 Hr. | |
78 | PRO |
Showing 61–90 of 756 exercises
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