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 29th, 2026 → Aug 30th, 2026
View repo
View results
5 / 5
Submissions
Severity
Validity
Tags
Author
#1
Reentrancy in `refund` allows an entrant to drain raffle funds
High
Valid
[H-02] Reentrancy Vulnerabi...
hongphat19
#2
Weak randomness lets callers and block producers bias winner selection
High
Valid
[H-03] Randomness can be gamed
hongphat19
#3
Quadratic duplicate checks can DoS raffle entry
Medium
Valid
[M-01] `PuppyRaffle: enterR...
hongphat19
#4
Refunded players remain counted and can DoS winner selection
Medium
Invalid
hongphat19
#5
`uint64` fee accounting can overflow and permanently lock fees
High
Valid
[H-05] Typecasting from uin...
hongphat19
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!
