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 dependent on how the situation is resolved. According to a report from Aave Labs and LlamaRisk, 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 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, leaving Aave vulnerable to collateral with potentially impaired backing. Aave Labs took swift action to mitigate the risk by freezing rsETH markets, setting loan-to-value ratios to zero, and halting new borrowing against the asset. The outcome now largely 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 stemmed from 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 security of interconnected DeFi infrastructure and has led to a significant withdrawal of around $6 billion in total value locked from Aave. Discussions are underway to address potential losses, with the report stating that the DAO treasury holds approximately $181 million in assets.