fix(eip7702): onlySelf guard on BatchExecutor.multiSend - #56
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Without msg.sender == address(this), any third party can call a delegated EOA's multiSend and drain its ETH. Guard multiSend and refresh the embedded creation bytecode (solc 0.8.21, optimize 200).
keanji-x
approved these changes
Aug 18, 2026
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Summary
BatchExecutor.multiSendhad no caller restriction. Under EIP-7702, any third party could call a delegated EOA and drain its ETH viaaddress(this).call{value:}.require(msg.sender == address(this), "only self")and refresh the embedded creation bytecode (solc 0.8.21 --optimize --optimize-runs 200).Context
Found while reviewing Gravity public testnet 7702 bench residual state: worker EOAs still delegated to the vulnerable template after the bench process stopped, leaving balances drainable. Testnet workers were cleared/swept separately; this PR hardens the contract for future deploys.
Self-sponsored bench txs (
tx.to == EOA,msg.sender == EOA) continue to work.Test plan
solc --bin --optimize --optimize-runs 200; embedded hex matches artifactCALLER ADDRESS EQ(333014) before multiSend bodymultiSendsucceeds; third-party call reverts"only self"