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
Oct 11th, 2026 → Oct 18th, 2026
View repo
View results
9 / 9
Submissions
Severity
Validity
Tags
Author
#1
H-1 Reentrancy in refund() drains the prize pool
High
Valid
[H-02] Reentrancy Vulnerabi...
hatchworker
#2
H-2 Winner and rarity are fully predictable
High
Valid
[H-03] Randomness can be gamed
hatchworker
#3
M-1 One refund permanently bricks selectWinner
High
Valid
[H-04] `PuppyRaffle::refund...
hatchworker
#4
M-2 selectWinner can crown a refunded hole
High
Valid
[H-01] Potential Loss of Fu...
hatchworker
#5
L-1 totalFees silently truncates on uint64 cast
High
Valid
[H-05] Typecasting from uin...
hatchworker
#6
L-2 Rarity probabilities are off by one
Low
Valid
[L-03] Participants are mis...
hatchworker
#7
L-3 changeFeeAddress has no zero-address check
Low
Invalid
hatchworker
#8
L-4 enterRaffle duplicate check is O(n^2) over an unbounded array
Medium
Valid
[M-01] `PuppyRaffle: enterR...
hatchworker
#9
L-5 getActivePlayerIndex returns 0 for inactive players
Low
Valid
[L-01] Ambiguous index retu...
hatchworker
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!