Circle offered an emergency proposal on Aave’s governance discussion board on April 22 to change the rate of interest parameters of the USDC pool, which has been paralyzed for 4 days with 99.87% utilization and fewer than $3 million out there for withdrawals.
The measure seeks to unlock USD 1.9 billion in USDC trapped because of the Kelp DAO hack on April 18.
The rationale why Aave was affected has to do with the truth that rsETH, issued by Kelp DAO, was accepted on this platform as collateral to borrow belongings comparable to WETH or USDC. After the Kelp DAO bridge hack, that help disappeared, leaving Aave with actual loans with out efficient collateral and producing unhealthy debt, inflicting large withdrawals from different customers and inflicting mortgage swimming pools, comparable to USDC, to be full, with loans that can not be returned.
The proposal, signed by Gordon Liao, chief economist at Circle, proposes elevating the parameter Slope 2 from present 10% to 50%. He Slope 2 defines how shortly the rate of interest rises when the pool exceeds its optimum stage of use: with the present worth, the utmost fee that the pool can attain is 14% per 12 months; With the proposed change, it could attain 53.5%. The proposal additionally contemplates reducing the optimum pool utilization from 92% to 85%.
The logic is that the present 14% just isn’t sufficient to draw exterior depositors whereas the pool is frozen. An investor with USD 100,000 in USDC right now receives about USD 12,000 yearly, however with out having the ability to withdraw each time he needs. With charges near 48%, That very same capital would generate USD 48,000 per 12 months —about USD 4,000 per thirty days—, a return that justifies taking up the danger of non permanent illiquidity.
If new depositors enter, attracted by that fee, the pool fills with contemporary USDC, utilization drops under 100%, and those that had been trapped can withdraw. The pool accumulates USD 1.89 billion in deposits towards USD 1.89 billion in loans, and has contracted about USD 60 million within the final 24 hours, as repayments are instantly absorbed by queued withdrawals.
The proposal contemplates a primary step by way of Threat Steward—speedy choice mechanism— adopted by full governance ratification in 5 to seven days.
The measure has, nonetheless, a counterpart: anybody who has an energetic mortgage in USDC would additionally see their fee rise, from 14% to as much as 53.5% so long as the pool stays saturated. The proposal assumes that these debtors are already in an emergency state of affairs because of the hacking and will not be going to repay the worth of the credit score. As quickly as new capital arrives and utilization goes down, charges would robotically fall to regular rangesshut to three% or 4%.
The hack that unleashed the disaster
The set off was on April 18, when an attacker breached KelpDAO’s interchain bridge by way of a flaw in LayerZero’s messaging infrastructure, draining 116,500 rsETH—18% of the circulating provide—price $292 million, the most important DeFi hack of 2026.
Within the subsequent 24 hours, massive holders withdrew greater than $6 billion from Aave, pushing main swimming pools to 100% utilization and leaving remaining depositors trapped. Blocked customers then took out almost USD 300 million in loanss towards their very own secure deposits, assuming losses, to attempt to exit the protocol by means of different means.
If the proposal just isn’t authorised or fails to draw new capital, Aave faces the danger that the pool contraction will proceed indefinitely, deepening the flight of customers to competing protocols which are already capitalizing on the void.
