★ Default bytes32(0) acceptable as valid root
ether.fi's assessment for RD-F-154 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
[★ CRITICAL — green] LayerZero V2 OFT does not use Merkle roots as message authentication. Authentication is DVN-threshold-based (4-of-4 required). The Nomad $190M bug class (default bytes32(0) root accepted as valid) is architecturally inapplicable to this DVN-based pattern. No Merkle root acceptance pattern found in EtherfiOFTUpgradeable or EtherFiOFTAdapterUpgradeable.
Sources #
- GitHubSecurityUpgrade.s.solSecurityUpgrade.s.sol — DVN-based authentication, not Merkle rootretrieved 2026-04-28
- EtherfiOFTUpgradeable.solEtherfiOFTUpgradeable.sol — no Merkle root pattern; DVN authentication modelretrieved 2026-04-28
Methodology #
Determine whether the bridge inbox accepts a default-value (bytes32(0)) Merkle root as a valid proof root (Nomad bug class).
See the full factor methodology and distribution across all protocols →
rubric_version v1.7.0 protocol ether-fi factor RD-F-154 score green collected_at 2026-04-28 13:58:46