Compound V3 Upgrade Review Flags Moderate 5.8/10 Risk Across Governance and Cross-Chain Paths

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A technical compatibility review of Compound V3, which holds roughly $1.34 billion in total value locked across Ethereum mainnet and layer-2 networks, was published on 28 October 2026. The audit examined how protocol upgrades are enabled, covering proxy patterns, governance actions, storage layout, cross-chain bridges, and external integrations. It identified nine attack vectors, including storage slot collisions and replay or state-inconsistency risks during partial upgrades. The protocol received an overall score of 5.8 out of 10, described as moderate, reflecting strong governance and test coverage offset by the high value at stake. The report recommends stricter storage-gap audits, dual timelocks with hardware-secured signers, atomic cross-chain upgrades, and versioned interfaces.

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