Outdated versions of Solidity are being used in all contracts.
The compiler options in the truffle-config file specifies version 0.6.6, which was released on April 6, 2020.
Throughout the codebase there are also different versions of Solidity being used.
As Solidity is now under a fast release cycle, consider using a more recent version of the compiler, such as version 0.7.6.
In addition, to avoid unexpected behavior, consider specifying explicit Solidity versions in pragma statements.
- OpenZeppelin Fei Protocol Finding L04
- Configuration
- Solidity Versions
- Outdated & Multiple
- Recent & Single & Fixed