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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
Oct 28th, 2026 → Oct 28th, 2026
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6 / 6
Submissions
Severity
Validity
Tags
Author
#1
mintSnowman has no access control, so anyone can mint as many Snowman NFTs as they want and bypass the airdrop
High
Invalid
cuddlycookie727
#2
earnSnow uses one shared timer for all users, so any claim or purchase, even buySnow(0), blocks everyone else from earning their weekly token
Medium
Invalid
cuddlycookie727
#3
Spelling errors in SnowmanAirdrop's EIP-712 type hash make all standard wallet signatures invalid, breaking claimSnowman
Medium
Invalid
cuddlycookie727
#4
SnowmanAirdrop builds the Merkle leaf from the live Snow balance instead of the allocated amount, so anyone can block a user's claim by changing their balance
Medium
Invalid
cuddlycookie727
#5
SnowmanAirdrop never checks s_hasClaimedSnowman and signatures have no nonce or expiry, allowing repeated claims and replay of old signatures by anyone
Medium
Invalid
cuddlycookie727
#6
buySnow takes WETH and keeps the user's ETH when msg.value is not exactly the price, so the user pays twice
Low
Invalid
cuddlycookie727
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