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Puppy Raffle
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AI First Flight
Puppy Raffle
AI First Flight #1
Beginner Friendly
Foundry
Solidity
NFT
EXP
AI First Flight
EXP
Feb 4th, 2026 → Feb 4th, 2026
View repo
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7 / 7
Submissions
Severity
Validity
Tags
Author
#1
Weak randomness for rarity selection enables predictable or biased NFT rarity
High
Valid
[H-03] Randomness can be gamed
0xsnoweth
#2
Weak randomness for winner selection uses `block.timestamp` and `block.difficulty`
High
Valid
[H-03] Randomness can be gamed
0xsnoweth
#3
Reentrancy in `refund()` allows draining multiple refunds before state is updated
High
Valid
[H-02] Reentrancy Vulnerabi...
0xsnoweth
#4
External ETH transfer in `refund()` enables reentrancy through `sendValue`
High
Valid
[H-02] Reentrancy Vulnerabi...
0xsnoweth
#5
State update after external call in `refund()` breaks checks-effects-interactions
High
Valid
[H-02] Reentrancy Vulnerabi...
0xsnoweth
#6
Weak PRNG in `selectWinner()` enables biased winner selection
High
Valid
[H-03] Randomness can be gamed
0xsnoweth
#7
Weak winnerIndex computation uses manipulable block values
High
Valid
[H-03] Randomness can be gamed
0xsnoweth
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