Submission Details
Severity:
using low-level-calls `SpookySwap::trickOrTreat`
Summary
while this low-level call is functional, it's generally recommended to use higher-level functions for Ether transfers
if (msg.value > requiredCost) {
uint256 refund = msg.value - requiredCost;
(bool refundSuccess,) = msg.sender.call{value: refund}("");
require(refundSuccess, "Refund failed");
}
Vulnerability Details
The use of low-level calls is error-prone. Low-level calls do not check for code existence or call success.
Impact
Tools Used
Personal Knowledge
Recommendations
Use high-level functions like transfer() or send() when possible for better safety and easier auditing.
Rewards breakdown
nSLOC
109This contest has a flat reward structure with the following payouts:
100 EXP
20 EXP
2 EXP
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