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mediumFront-running / MEVEVM-Solidity

Biconomy: Griefing attacks on `handleOps` and `multiSend` logic

Payout
$0
Protocol
Biconomy
Disclosed
Mar 3, 2023
Source
code4rena

ERC-4337 bundlers and relayers aggregate multiple UserOperations into a single batch transaction using handleOps or multiSend. An attacker can front-run the relayer's batch by executing a single UserOperation from that batch in a separate transaction. Because …

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References

This report is already public and closed. Coin Buggie never publishes active or unpatched vulnerability data.