Submission Details
Impact:
Likelihood:
`FIXEDFEE` Hardcoded Immutable — No Protocol Fee Adjustment
[LOW] FIXEDFEE Hardcoded Immutable — No Protocol Fee Adjustment
File: sources/2025-02-datingdapp/src/LikeRegistry.sol
Line: 14
Summary
The 10% platform fee is permanently set at deployment with no ability to adjust it, requiring a full redeployment for any fee change.
Vulnerability Details
uint256 immutable FIXEDFEE = 10; // Permanently 10%
Impact
Low — no direct security risk, but removes operational flexibility.
Tools Used
Manual review
Recommendations
uint256 public fee = 10;
uint256 constant MAX_FEE = 20;
function setFee(uint256 newFee) external onlyOwner {
require(newFee <= MAX_FEE, "Fee too high");
fee = newFee;
}
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