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 lending protocol Aave at risk of losing up to $230 million, with the 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 exploited 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. The attacker then deposited 89,567 rsETH into Aave as collateral and borrowed approximately $190 million in ETH and related assets, leaving Aave exposed to potentially impaired collateral. Aave Labs promptly took action to contain the risk, freezing rsETH markets and halting new borrowing against the asset. The outcome now depends on how Kelp handles the shortfall, with two possible scenarios: if losses are spread across all rsETH holders, the token would face an estimated 15% depegging, resulting in around $124 million in bad debt for Aave, or if losses are isolated to Layer 2 networks, the impact would be more severe, with bad debt rising to roughly $230 million. The exploit was made possible by weaknesses in Kelp's verification of cross-chain messages using LayerZero, allowing the attacker to manipulate the process and extract value from the system. The incident has raised concerns about the safety of interconnected DeFi infrastructure and has led to a broad pullback, with around $6 billion in total value locked withdrawn from Aave. The report highlights Aave's indirect exposure to external systems, with increased collateral risk, pressure on lending positions, and a decline in deposits as users reassess the safety of the infrastructure. Discussions are underway with ecosystem participants to address potential losses, with the report stating that the DAO treasury holds approximately $181 million in assets.