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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
May 22nd, 2026 → May 22nd, 2026
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6 / 6
Submissions
Severity
Validity
Tags
Author
#1
claimSnowman() missing claim replay protection — receiver can claim unlimited Snowman NFTs
Low
Valid
[L-01] Missing Claim Status...
squashingbugsforlife
#2
collectFee() does not check WETH transfer return value — fee collection silently fails
Medium
Invalid
squashingbugsforlife
#3
claimSnowman() reads live balance twice — TOCTOU race allows balance manipulation between check and use
Medium
Invalid
squashingbugsforlife
#4
mintSnowman() updates s_TokenCounter after _safeMint — reentrancy via ERC721 receiver callback
Low
Invalid
squashingbugsforlife
#5
_isValidSignature() ignores ECDSA error codes — invalid signatures silently treated as wrong signer
Medium
Invalid
squashingbugsforlife
#6
MESSAGE_TYPEHASH contains typo 'addres' instead of 'address' — EIP-712 signatures permanently broken
High
Valid
[H-02] Unconsistent `MESSAG...
squashingbugsforlife
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