QA Report

[code423n4]

[L-01] Avoid floating pragmas for non-library contracts.

Impact

While floating pragmas make sense for libraries to allow them to be included with multiple different versions of applications, it may be a security risk for application implementations.

A known vulnerable compiler version may accidentally be selected or security tools might fall-back to an older compiler version ending up checking a different EVM compilation that is ultimately deployed on the blockchain.

It is recommended to pin to a concrete compiler version.

Findings:

contracts/JB721GlobalGovernance.sol:L2     pragma solidity ^0.8.16;

contracts/JBTiered721DelegateProjectDeployer.sol:L2     pragma solidity ^0.8.16;

contracts/JB721TieredGovernance.sol:L2     pragma solidity ^0.8.16;

contracts/JBTiered721DelegateStore.sol:L2     pragma solidity ^0.8.16;

contracts/JBTiered721DelegateDeployer.sol:L2     pragma solidity ^0.8.16;

contracts/JBTiered721Delegate.sol:L2     pragma solidity ^0.8.16;

contracts/abstract/JB721Delegate.sol:L2     pragma solidity ^0.8.16;

[L-02] require()/revert() statements should have descriptive strings.

Impact

Consider adding descriptive strings in require()/revert().

Findings:

contracts/JBTiered721Delegate.sol:L216    require(address(this) != codeOrigin);

contracts/JBTiered721Delegate.sol:L218    require(address(store) == address(0));

[L-03] _safemint() should be used rather than _mint() wherever possible

Impact

_mint() is discouraged in favor of _safeMint() which ensures that the recipient is either an EOA or implements IERC721Receiver. Both OpenZeppelin and solmate have versions of this function

Findings:

contracts/JBTiered721Delegate.sol:L461      _mint(_reservedTokenBeneficiary, _tokenId);

contracts/JBTiered721Delegate.sol:L504      _mint(_beneficiary, _tokenId);

contracts/JBTiered721Delegate.sol:L635    _mint(_beneficiary, _tokenId);

contracts/JBTiered721Delegate.sol:L677      _mint(_beneficiary, _tokenId);

[c4-judge]

Picodes marked the issue as grade-c

[c4-judge]

Picodes marked the issue as grade-b