Chaos Labs: Aave's approximately $27 million liquidation event was caused by a CAPO oracle configuration problem.

CoinFeed reported on March 11 that, according to an analysis report released by Chaos Labs, the recent $27 million liquidation event on Aave was caused by a configuration issue with the CAPO risk oracle. The root cause lies in the inconsistency of update constraints at the smart contract level: the `snapshotRatio` parameter, limited by an on-chain constraint of only 3% growth every 3 days, could not be directly updated from approximately 1.1572 to the target value of approximately 1.2282, but could only increase to approximately 1.1919; while `snapshotTimestamp` successfully updated to a timestamp from 7 days prior. This misalignment between the ratio and the timestamp caused the CAPO-calculated exchange rate ceiling (approximately 1.1939) to be about 2.85% lower than the actual market exchange rate, triggering the liquidation of approximately 10,938 wstETH. No bad debts were incurred in the event.