Aave Faces Potential Losses of $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, pending the outcome of the situation. According to a report published by Aave Labs and LlamaRisk on the Aave governance forum, 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 took advantage of this setup by creating a forged transfer message that appeared legitimate, 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 quickly responded 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. If losses are spread across all rsETH holders, Aave would face an estimated $124 million in bad debt. However, 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 process using LayerZero, which allowed the attacker to manipulate cross-chain messages and 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and has led to a significant withdrawal of funds from Aave, with around $6 billion in total value locked being withdrawn. The report highlights Aave's indirect exposure to external systems and the need for ecosystem participants to address potential losses.