A daily CTF challenge with a fun new puzzle every day
This side program features challenges with a different flavor from Daily AlpacaHack. We publish one harder or more unconventional challenge every few days.
Solve each challenge within its time window to appear on the leaderboard.
Discussion with friends or AI is welcome (account sharing is prohibited).
Sharing solutions is allowed only after the challenge period has ended.
New to CTFs?
This program features higher difficulty and unconventional challenges. Try the beginner-friendly Daily AlpacaHack first to warm up.
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arkarkTopic: NodeReleased: Jul 26, 2026
Node.js permission model bypass!
--allow-fs-read=/sandbox--allow-fs-write=/sandbox--jitless--freeze-flags-after-init--frozen-intrinsicsnode:sqlite, node:ffi, and internal modulesNote: Although unintended, this challenge may be solvable using a binary exploitation approach. However, the intended solution does not rely on any memory-safety bugs.