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 outcome contingent on how the situation is resolved. 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 manipulated this setup by creating a forged 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 steps to contain the risk, including freezing rsETH markets and halting new borrowing. The outcome now depends on how Kelp handles the shortfall, with two possible scenarios: if losses are spread across all rsETH holders, Aave would face around $124 million in bad debt, but if losses are isolated to Layer 2 networks, the impact would be more severe, with bad debt rising to roughly $230 million. The exploit highlighted weaknesses in Kelp's verification process using LayerZero, allowing the attacker to extract value from the system. In response, users have withdrawn around $6 billion in total value locked from Aave, reflecting a broad pullback due to uncertainty. The incident has raised concerns about the safety of interconnected DeFi infrastructure and the potential for undercollateralized loans.