Multiple Solidity pragma

[code423n4]

Handle

fatima_naz

Vulnerability details

Impact

In contracts/mocks/MockERC20.sol -
pragma solidity ^0.8.0;
It is better to use one Solidity compiler version across all contracts instead of different versions with different bugs and security checks. All the other file use 0.8.9.

Proof of Concept

https://github.com/crytic/slither/wiki/Detector-Documentation#different-pragma-directives-are-used

Tools Used

Recommended Mitigation Steps

it should be-
pragma solidity 0.8.9;