Competitive Audits
First Flights
Leaderboard
Docs
Toggle theme
Sign up
Log in
All First Flights
Santa's List
Submissions
AI First Flight
Santa's List
AI First Flight #3
Beginner Friendly
Foundry
EXP
AI First Flight
EXP
Oct 5th, 2026 → Oct 5th, 2026
View repo
View results
7 / 7
Submissions
Severity
Validity
Tags
Author
#1
Malicious backdoor in the tampered solmate `ERC20.transferFrom` (lib/solmate-bad) inherited by SantaToken drains any holder
High
Valid
[H-05] Malicious Code Injec...
hopeh
#2
Malicious `testPwned` runs arbitrary host commands via Foundry FFI, enabling code execution / data exfiltration on reviewers
High
Valid
[H-06] Malicious Test poten...
hopeh
#3
`checkList` is missing the `onlySanta` modifier, so anyone can set (or grief) any address's naughty/nice status
High
Valid
[H-01] Anyone is able to ca...
hopeh
#4
Default `Status` enum value is NICE(0), so any never-checked address can `collectPresent` and mint a present
High
Valid
[H-02] All addresses are co...
hopeh
#5
`collectPresent` can be called unlimited times by transferring the minted NFT away (balanceOf guard bypass)
High
Valid
[H-04] Any `NICE` or `EXTRA...
hopeh
#6
`buyPresent` burns the receiver's SantaTokens and mints the NFT to the caller (roles reversed; anyone burns any holder)
High
Valid
[H-03] SantasList::buyPrese...
hopeh
#7
`buyPresent` burns only 1e18 (hardcoded in SantaToken.burn) instead of PURCHASED_PRESENT_COST=2e18
Medium
Valid
[M-01] Cost to buy NFT via ...
hopeh
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!
