Hawk High

Summary

The LevelOne contract omits NatSpec comments on nearly all public and external functions—including critical entry points like enroll, giveReview, and graduateAndUpgrade.

Vulnerability Details

Solidity NatSpec comments—using tags such as @notice, @dev, @param, and @return—are parsed by the compiler for inclusion in ABI documentation and can be surfaced in wallets, block explorers, and documentation sites. NatSpec also underpins tools like solidity-docgen for automating static documentation generation from code comments.

A few instances:

Impact

Without NatSpec, developers and users lack in-source guidance about function behavior, parameter expectations, event semantics, and error conditions, making the code harder to review, maintain, and integrate.

Tools Used

• Manual Review

Recommendations

For each function, include @notice to describe the user-facing behavior, @param tags for each argument, and @return tags for return values. Use @dev to clarify implementation details or side effects, and document events and public state variables similarly.