Project

Summary

Vulnerability Details

OpenZeppelin now provides an implementation of meta transactions. Previously there were not any standard implementations and we have seen many functionally equivalent versions. The OpenZeppelin version includes useful checks (e.g. ensuring the forwarder has enough gas to complete the transaction).

Impact

Higher likelihood of undiscovered vulnerabilities and Greater maintenance overhead for the protocol team to handle potential bugs and upgrades.

Tools Used

manual

Recommendations

I can recommend using the OpenZeppelin implementation which includes checks. Additionally, standardized implementations are well tested and audited, reducing the risk of unknown vulnerabilities.