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

A recent exploit of the Kelp DAO and LayerZero bridge has put Aave at risk of losing up to $230 million, depending on the resolution of the situation. The incident revolves around rsETH, a liquid restaking token issued by KelpDAO, which relies on a bridge mechanism to move tokens between blockchains. An attacker took advantage of this setup by creating a fake 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 Labs responded quickly to mitigate the risk by freezing rsETH markets and halting new borrowing against the asset. The outcome now depends on how Kelp DAO handles the shortfall, with possible losses ranging from $124 million if spread across all rsETH holders to $230 million if isolated to Layer 2 networks. The exploit was caused by weaknesses in Kelp's verification process using LayerZero, allowing the attacker to manipulate cross-chain messages and extract value from the system. This incident has raised concerns about the safety of interconnected DeFi infrastructure and has led to a significant withdrawal of total value locked from Aave.