Exercises
| Exercise | Avg. Time | Difficulty | Solved by | Tier | |
|---|---|---|---|---|---|
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JS Sandbox: Prototype Chain Navigation
This exercise covers navigating __proto__, .constructor, and .prototype from a string literal to reach the Function constructor.
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-- |  |
1 | PRO |
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JS Sandbox: Keyword Blocklist Bypass
This exercise covers bypassing indexOf/includes blocklists with bracket notation and string concatenation.
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-- |  |
0 | PRO |
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JS Sandbox: From Sandbox Escape to RCE
This exercise covers the standard Node.js RCE chain: process -> mainModule -> require('child_process') -> execSync.
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-- | |
0 | PRO |
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JS Sandbox: The Function Constructor
This exercise covers using Function(...)() as an eval alternative to execute arbitrary code in an app that blocks eval.
|
-- | |
0 | PRO |
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CVE-2026-XX762
This challenge covers the review of a CVE in a python codebase and its patch
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-- |  |
0 | PRO |
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CVE-2026-XX928
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
0 | PRO |
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CVE-2026-XX977
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
0 | PRO |
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CVE-2026-XX953
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
0 | PRO |
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CVE-2026-XX230
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
0 | PRO |
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CVE-2026-XX790
This challenge covers the review of a CVE in a python codebase and its patch
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< 1 Hr. | |
26 | PRO |
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CVE-2023-51XX9
This challenge covers the review of a CVE in a python codebase and its patch
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< 1 Hr. | |
25 | PRO |
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CVE-2026-XX130
This challenge covers the review of a CVE in a python codebase and its patch
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< 1 Hr. | |
31 | PRO |
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JWT: Refresh Token Bypass
This exercise covers bypassing JWT refresh token validation to maintain unauthorized access.
|
-- | |
0 | PRO |
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CVE-2023-3X829
This challenge covers the review of a CVE in a Python codebase and its patch
|
-- | |
32 | PRO |
|
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CVE-2026-21XX3
This challenge covers the review of a CVE in a Python codebase and its patch
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< 1 Hr. | |
29 | PRO |
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CVE-2026-2413X
This challenge covers the review of a CVE in a python codebase and its patch
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< 1 Hr. | |
30 | PRO |
|
|
CVE-2024-X170X
This challenge covers the review of a CVE in a JavaScript codebase and its patch
|
-- | |
50 | PRO |
|
|
CVE-2025-X9X28
This challenge covers the review of a CVE in a typescript codebase and its patch
|
-- | |
38 | PRO |
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CVE-2025-X23XX
This challenge covers the review of a CVE in a javascript codebase and its patch
|
-- | |
39 | PRO |
|
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CVE-2025-XX953
This challenge covers the review of a CVE in a typescript codebase and its patch
|
-- | |
48 | PRO |
|
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CVE-2025-XX662
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
38 | PRO |
|
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CVE-2025-625X8
This challenge covers the review of a CVE in a javascript codebase and its patch
|
-- | |
48 | PRO |
|
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CVE-2026-XX951
This challenge covers the review of a CVE in a javascript codebase and its patch
|
-- | |
45 | PRO |
|
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CVE-2026-X189X
This challenge covers the review of a CVE in a python codebase and its patch
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< 1 Hr. | |
40 | PRO |
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CVE-2026-XX871
This challenge covers the review of a CVE in a python codebase and its patch
|
-- | |
40 | PRO |
|
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JWT: Signature Leak
This exercise covers exploiting a JWT signature leak to forge authentication tokens.
|
-- | |
0 | PRO |
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CVE-2026-24895: FrankenPHP Path Confusion RCE using Unicode | 1-2 Hr. | |
3 | PRO |
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JWT: Invalid Algorithm
This exercise covers exploiting JWT algorithm validation flaws to bypass signature verification.
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< 1 Hr. | |
11 | PRO |
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CVE-2026-XX050
This challenge covers the review of a CVE in a typescript codebase and its patch
|
-- | |
49 | PRO |
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CVE-2025-XX864
This challenge covers the review of a CVE in a typescript codebase and its patch
|
< 1 Hr. | |
62 | PRO |
Showing 1–30 of 708 exercises
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