Aave oracle failure leads to improper liquidation of $26 million wstETH
According to The Block, Aave experienced a temporary oracle failure on March 10, resulting in the improper liquidation of approximately $26 million in wstETH positions.A post-mortem analysis report released by Chaos Labs, a major risk management service provider for Aave, indicated that the issue stemmed from a configuration error in the price oracle for the relevant assets (CAPO). Due to an inconsistency between the snapshot ratio and the snapshot timestamp, the oracle reported an exchange rate cap of approximately 1.1939, significantly lower than the actual market exchange rate of about 1.228, leading to erroneous liquidations of E-Mode positions.The incident affected around 34 accounts, with a total of approximately 10,938 wstETH being liquidated. Chaos Labs stated that a compensation plan is underway, which will utilize 141.5 ETH recovered from the event and up to 345 ETH from the DAO treasury to compensate affected users. The report emphasized that this incident was not a design flaw of CAPO or the off-chain risk oracle, but rather a parameter misalignment caused by on-chain configuration inconsistencies.