Competitive Audits
First Flights
Leaderboard
Docs
Toggle theme
Sign up
Log in
All First Flights
Puppy Raffle
Submissions
AI First Flight
Puppy Raffle
AI First Flight #1
Beginner Friendly
Foundry
Solidity
NFT
EXP
AI First Flight
EXP
Aug 6th, 2026 → Aug 6th, 2026
View repo
View results
7 / 7
Submissions
Severity
Validity
Tags
Author
#1
Reentrancy in refund() Allows Draining the Entire Raffle Pool.
High
Valid
[H-02] Reentrancy Vulnerabi...
jointauditorinc
#2
Predictable/Manipulable Randomness in selectWinner() Lets Attackers Choose the Winner and NFT Rarity.
High
Valid
[H-03] Randomness can be gamed
jointauditorinc
#3
Unbounded Duplicate-Check Loop in enterRaffle() Enables Gas-Griefing DoS.
Medium
Valid
[M-01] `PuppyRaffle: enterR...
jointauditorinc
#4
Prize Distribution Can Be Permanently Blocked by a Winner That Reverts on ETH Receipt.
Medium
Valid
[M-03] Impossible to win ra...
jointauditorinc
#5
selectWinner can select a refunded player (address(0)) as the winner, sending prize pool to zero address and losing all funds.
High
Valid
[H-01] Potential Loss of Fu...
jointauditorinc
#6
changeFeeAddress allows setting address(0), permanently locking all future fees.
Low
Invalid
jointauditorinc
#7
getActivePlayerIndex returns 0 for both non-existent players and the first active player.
Low
Valid
[L-01] Ambiguous index retu...
jointauditorinc
Previous
1
Next
Support
FAQs
Can't find an answer? Chat with us on Discord, Twitter or Linkedin.
What is Cyfrin CodeHawks?
What is a competitive audit?
How can I host a competition on CodeHawks?
How is a contest prize pool determined?
How do I get rewarded?
What is a First Flight?
Give us feedback!
