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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
Nov 1st, 2026 → Nov 8th, 2026
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5 / 5
Submissions
Severity
Validity
Tags
Author
#1
Snowman.mintSnowman() has no access control, so anyone can mint unlimited Snowman NFTs for free
High
Valid
[H-01] Unrestricted NFT Min...
niosoke
#2
claimSnowman() never checks s_hasClaimedSnowman, so the same allocation can be claimed repeatedly and the same signature replays
Low
Valid
[L-01] Missing Claim Status...
niosoke
#3
Snow earn timer is a single global variable shared by all users (and reset by buySnow), so one user can block everyone's weekly free Snow
Low
Valid
[L-02] Global Timer Reset i...
niosoke
#4
buySnow() keeps any non-exact ETH payment and still charges the full WETH price on top, so inexact payers pay twice
Medium
Invalid
niosoke
#5
MESSAGE_TYPEHASH misspells the struct field type ("addres"), so standard EIP-712 signatures are rejected
High
Valid
[H-02] Unconsistent `MESSAG...
niosoke
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