EIP-712 domain separator missing chainId

mETH Protocol's assessment for RD-F-020 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

mETH implements ERC20PermitUpgradeable (OZ standard) which includes chainId in the EIP-712 domain separator by construction via EIP712Upgradeable. No custom EIP-712 implementation found that could omit chainId.

Sources #

GitHub
METH.sol — EIP-712 domain separator (chainId included via OZ standard)METH.sol: inherits ERC20PermitUpgradeable — OZ standard includes chainId in domain separator via EIP712Upgradeableretrieved 2026-05-16

Methodology #

Determine whether the EIP-712 domain separator struct omits the `chainId` field, allowing cross-chain replay.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol meth-protocol factor RD-F-020 score green collected_at 2026-05-16 02:17:50