Submission Details
Severity:
Should check mapping key exists before using
Summary
lots of devs forget that using a random key to get a value from the mapping will return an object with default values
Vulnerability Details
Loan memory loan = loans[loanId]
some flawed validation that does not check the zero values in a non-existing mapping value
Impact
If loadId doesn't exist, loan will be default value, may interfere data usage afterwards
Tools Used
Manual Review
Recommendations
Add explicit checks to revert in this case, validate mapping key exists before using
Prize pool breakdown
Total prize
20,000 USDC
nSLOC
70628
USDC / LOC
18,000 USDC
2,000 USDC
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