Contracts should be deployed with the same compiler version and flags that they have been tested with thoroughly. Locking the pragma helps to ensure that contracts do not accidentally get deployed using, for example, an outdated compiler version that might introduce bugs that affect the contract system negatively.
jeffywu
commented
3 years ago
Handle
JMukesh
Vulnerability details
Impact
Contracts should be deployed with the same compiler version and flags that they have been tested with thoroughly. Locking the pragma helps to ensure that contracts do not accidentally get deployed using, for example, an outdated compiler version that might introduce bugs that affect the contract system negatively.
https://swcregistry.io/docs/SWC-103
Proof of Concept
most of contract used floating pragma
Tools Used
use fixed solidity version
Recommended Mitigation Steps