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 outcome depending 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, and releasing 116,500 rsETH from the Ethereum-side bridge. Instead of selling the assets, the attacker deposited 89,567 rsETH into Aave as collateral and borrowed approximately $190 million in ETH and related assets. Aave moved quickly to contain the risk by freezing rsETH markets, setting loan-to-value ratios to zero, and halting new borrowing against the asset. The outcome now depends on how Kelp handles the shortfall, with potential losses ranging from $124 million if spread across all rsETH holders to $230 million if isolated to Layer 2 networks. The exploit stemmed from weaknesses in Kelp's 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 and has led to a significant withdrawal of funds from Aave, with around $6 billion in total value locked being withdrawn following the incident.