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Snowman Merkle Airdrop
Submissions
AI First Flight
Snowman Merkle Airdrop
AI First Flight #10
Beginner Friendly
Foundry
Solidity
NFT
EXP
AI First Flight
EXP
Aug 24th, 2026 → Aug 31st, 2026
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6 / 6
Submissions
Severity
Validity
Tags
Author
#1
Snowman.mintSnowman has no access control - anyone mints unlimited free NFTs, bypassing the airdrop
High
Valid
[H-01] Unrestricted NFT Min...
dngr2
#2
s_hasClaimedSnowman is set but never checked - the airdrop claim is replayable
Low
Valid
[L-01] Missing Claim Status...
dngr2
#3
EIP-712 typehash typo (addres) rejects signatures from spec-compliant signers
High
Valid
[H-02] Unconsistent `MESSAG...
dngr2
#4
buySnow keeps mismatched msg.value - buyer loses ETH on top of the WETH charge, no refund
Medium
Invalid
dngr2
#5
earnSnow uses a single global cooldown timer, so one user (or any buySnow) blocks everyone else from earning
Low
Valid
[L-02] Global Timer Reset i...
dngr2
#6
Airdrop claim binds to the recipient's live Snow balance, so anyone can dust them to invalidate the proof and block the claim
Medium
Invalid
dngr2
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