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
Dec 20th, 2025 → Dec 20th, 2025
View repo
View results
10 / 10
Submissions
Severity
Validity
Tags
Author
#1
Refunded Player Addresses Set to Zero Allow Prize Pool to Be Burned
High
Valid
[H-01] Potential Loss of Fu...
skadooshor
#2
External Call Before State Update in `refund()` Enables Reentrancy Attack
High
Valid
[H-02] Reentrancy Vulnerabi...
skadooshor
#3
Predictable On-Chain Values Used for Randomness Allow Winner Manipulation
High
Valid
[H-03] Randomness can be gamed
skadooshor
#4
Refund Mechanism Preserves Array Length Causing Incorrect Prize Pool Calculation
High
Valid
[H-04] `PuppyRaffle::refund...
skadooshor
#5
Unsafe Downcast of Fee to `uint64` Causes Silent Overflow
High
Valid
[H-05] Typecasting from uin...
skadooshor
#6
Solidity 0.7.6 Lacks Overflow Protection Leading to Arithmetic Errors
High
Valid
[H-06] Overflow/Underflow v...
skadooshor
#7
Public Mempool Visibility Enables Front-Running of Winner Selection
Medium
Invalid
skadooshor
#8
Nested Loop Duplicate Check Creates Quadratic Gas Cost Growth
Medium
Valid
[M-01] `PuppyRaffle: enterR...
skadooshor
#9
Strict Balance Equality Check Broken by Forced ETH Transfers
Medium
Valid
[M-02] Slightly increasing ...
skadooshor
#10
Non-Payable Smart Contract Winners Block Prize Distribution
Medium
Valid
[M-03] Impossible to win ra...
skadooshor
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!
