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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
Jun 6th, 2026 → Jun 10th, 2026
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5 / 5
Submissions
Severity
Validity
Tags
Author
#1
Snowman::mintSnowman has no access control, letting anyone mint unlimited Snowman NFTs for free
High
Valid
[H-01] Unrestricted NFT Min...
jengreg
#2
SnowmanAirdrop::claimSnowman rebuilds the Merkle leaf from the live balance, not the snapshot amount, locking out eligible claimers
Medium
Valid
[M-01] DoS to a user trying...
jengreg
#3
SnowmanAirdrop::claimSnowman has no replay protection: s_hasClaimedSnowman is set but never checked and the signed message has no nonce
Low
Invalid
jengreg
#4
SnowmanAirdrop MESSAGE_TYPEHASH is malformed ("addres" and stray spaces), so standards-compliant EIP-712 signatures are rejected
High
Valid
[H-02] Unconsistent `MESSAG...
jengreg
#5
Snow::buySnow strands ETH and double-charges when msg.value is not exactly equal to the fee
Low
Invalid
jengreg
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