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

A recent exploit of the Kelp DAO and LayerZero bridge has put lending protocol Aave at risk of losing up to $230 million, with the final impact dependent 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 transfer tokens between blockchains. An attacker manipulated this setup by creating a forged transfer message, resulting in the creation of new tokens without backing. The attacker then deposited the tokens into Aave as collateral and borrowed approximately $190 million in ETH and related assets, leaving Aave exposed to potentially impaired collateral. Aave Labs quickly moved to contain the risk by freezing rsETH markets and halting new borrowing against the asset. The outcome now depends on how Kelp handles the shortfall, with estimated losses ranging from $124 million to $230 million. The exploit was made possible by weaknesses in Kelp's verification of cross-chain messages using LayerZero, allowing the attacker to extract value from the system. The incident has raised concerns about the safety of interconnected DeFi infrastructure and has led to a significant withdrawal of total value locked from Aave.