Decentralized lending giant Aave has effectively come to a standstill after its core markets reached 100% utilization, rendering users unable to withdraw billions of dollars in cryptocurrency. According to DeFi Warhold, this unprecedented situation means that approximately $5 billion in stablecoins, including USDT and USDC, are now locked, with the protocol lacking the necessary liquidity to facilitate payouts.
The crisis unfolded on April 18, following a $292 million exploit of the Kelp DAO rsETH bridge, which led to a massive exodus of funds from the protocol, totaling $6.6 billion in under 24 hours. In response to the crisis, Aave founder Stani Kulechov stated that he had no useful comments to offer. DeFi Warhold explained that 100% utilization across all markets signifies a complete lack of liquidity, preventing liquidations from being processed and resulting in $3 billion in USDT and $2 billion in USDC being stuck without a clear exit strategy. The situation is further complicated by the potential for bad debt to compound if prices fluctuate, with no mechanism in place to mitigate it.
Natalie Newson, a senior blockchain security researcher at CertiK, emphasized that Aave is facing severe difficulties, as 100% utilization not only indicates a lack of liquidity but also means that the protocol's self-defense systems are compromised. Newson noted that liquidations require liquidity to function, and without it, undercollateralized positions cannot be closed, leading to a situation where bad debt accumulates, leaving the protocol vulnerable to collapse without external assistance.
The KelpDAO exploit, which did not directly target Aave, has nonetheless had a profound impact on the protocol, highlighting the interconnected nature of the DeFi ecosystem and the potential for a single point of failure to trigger a large-scale disaster. Aave's risk framework had previously anticipated the possibility of 100% utilization, with former Risk Manager Alex Bertomeu-Gilles warning in 2020 that such a scenario would be highly problematic, as depositors would be unable to withdraw their funds. Technical analyst Duo Nine was the first to identify that Aave had reached 100% utilization, noting that the situation began with the rsETH exploit and the subsequent withdrawal of billions of dollars by major players, ultimately leading to the current crisis.