Aave Faces Potential Losses of Up to $230 Million Following Kelp DAO Bridge Exploit

A recent bridge exploit involving Kelp DAO and LayerZero has put lending protocol Aave at risk of losing up to $230 million, depending on the resolution. The incident revolves around rsETH, a liquid restaking token issued by KelpDAO, which relies on a bridge mechanism to transfer tokens between blockchains. An attacker manipulated this setup by forging a valid transfer message, resulting in the creation of new tokens without backing. The attacker then deposited these tokens into Aave as collateral and borrowed approximately $190 million in ETH and related assets. Aave has taken swift action to contain the risk, freezing rsETH markets and halting new borrowing. The outcome now depends on how Kelp handles the shortfall, with potential losses ranging from $124 million to $230 million. The exploit highlighted weaknesses in Kelp's cross-chain message verification process using LayerZero, allowing the attacker to extract value from the system. The incident has raised concerns about the safety of interconnected DeFi infrastructure, leading to a withdrawal of around $6 billion in total value locked from Aave.