Assessment reports>SponsorshipPaymaster
Biconomy Labs
November 14, 2023
SponsorshipPaymaster
Findings Impact LevelCount
Critical
0
High
0
Medium
1
Low
0
Informational
1
CriticalHighMediumLowInformational
Prepared by
Syed Faraz AbrarEngineer[email protected]
Ayaz MammadovEngineer[email protected]
About

SponsorshipPaymaster is a token-based Paymaster that allows user to pay gas fees in ERC-20 tokens. Paymasters can sponsor transaction fees for contract accounts. The ERC-4337 Entrypoint verifies whether the Paymaster has a sufficient deposit or if the contract account holds enough funds to cover gas fees. During execution, if a Paymaster is involved, it can implement custom fee logic.

Executive Summary

Zellic conducted a security assessment for Biconomy Labs from November 9th to November 10th, 2023. During this engagement, Zellic reviewed SponsorshipPaymaster's code for security vulnerabilities, design issues, and general weaknesses in security posture.

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