How a 2.85% Price Error Caused $27M in Liquidations on Ave

Key receivers

A temporary 2.85% price difference in wstETH securities has sparked liquidity on Aave to the tune of $27 million, showing that even small technical issues can have major financial consequences for automated DeFi lending systems.

The liquidity surge was caused by the Aave system short-valuing wstETH at 1.19 ETH instead of its market value of around 1.23 ETH, causing some borrowing positions to appear unprofitable.

Price oracles are critical infrastructure in DeFi because they feed external market data into smart contracts, determining collateral values, credit health, and automatic liquidations should they occur.

The cause was not a faulty price feed, but a misconfiguration in Aave's CAPO risk exposure system, where expired smart contract parameters created a temporary cap on the token's exchange rate.

Decentralized finance (DeFi) protocols use automated logic to handle everything from collateral management to risk assessment. While this setup allows for a truly open and permissionless financial system, it also means that minor technical issues can snowball into major financial disruptions.

According to risk monitoring firm Chaos Labs, a market crash on March 10, 2026, resulted in nearly $27 million in payments to Ave's borrowers, clearly exposing its vulnerability. In one 24-hour window, nearly $27 million worth of user space was deleted. Interestingly, this was not caused by a large market sell-off, but rather by a short 2.85% price gap that hurt the holdings of wrapped stock ETH (wstETH).

This event serves as a reminder of how critical price oracles and robust risk management frameworks are to the stability of the DeFi ecosystem.

The article explains how a 2.85% price difference in wstETH securities triggered a liquidity of nearly $27 million on the Aave lending protocol. It highlights how term structures, smart contract parameters and automated liquidation strategies can promote minimal pricing errors in DeFi markets.

Sudden increase in fluid

Chaos Labs, which monitors credit protocols for unusual activity, noted a surge in liquidity in Aave's markets. Early speculation among onlookers suggested that there might be a problem with the price oracles on the platform, which may have misled the prices of the properties.

Price oracles act as critical bridges, providing external market prices to onchain applications. In lending protocols such as Aave, these feeds determine whether the borrower's collateral can still adequately cover their loan. When the collateral value falls below the required threshold, the system triggers the automatic liquidation of the position.

The asset at the center of this event was wstETH, which is commonly used as collateral in DeFi lending ecosystems.

Did you know this? Liquidations on credit protocols such as Aave often occur faster than traditional margin calls. Since DeFi markets operate 24/7 with automated smart contracts, positions can be liquidated within seconds if collateral ratios fall below the required threshold.

What is wstETH?

wstETH, or wrapped staked Ether (ETH), is a token issued via the Lido protocol, a leading liquid staking protocol.

When users share Ether through Lido, they initially receive stETH, which represents accumulated ETH and accumulated stake rewards. To improve compatibility with various DeFi applications, stETH can be encapsulated into wstETH.

One wstETH generally holds a little more value than one ETH due to the continuous reward pool. This makes it a particularly attractive and widely accepted form of collateral in DeFi lending markets.

Price difference

During the liquidation wave, a mismatch appeared between the actual market value of wstETH and the valuation implemented by the Aave risk system. Aave's algorithm values ​​wstETH at approximately 1.19 ETH, while the broader market values ​​it at 1.23 ETH.

This roughly 2.85% difference makes wstETH's holdings seem unrealistic.

As a result, certain borrowing positions fell below the required security threshold, triggering Aave's automatic liquidation process.

Why price oracles are critical in DeFi.

Price oracles are essential infrastructure in DeFi. Blockchains cannot realistically capture real-world market data, so Oracle services provide external price feeds for assets. These foods directly affect:

Collateral declines cause the protocol to deem the loan insufficiently backed, causing the position to automatically unwind.

Because this method is algorithmic, even small price differences can turn into big results.

Did you know this? Small price differences can have overarching effects in DeFi. Even a short difference of a few percent in bid or market price can create a lot of liquidity. This is especially true when many borrowers use highly leveraged positions backed by volatile crypto collateral.

The real cause: CAPO risk-word misconfiguration

A thorough analysis confirmed that Aave's main price oracle is working normally.

The root issue instead lies in the Related Asset Pricing Oracle (CAPO) Risk Oracle module, an additional layer of protection applied to select assets.

CAPO is specifically designed to measure the rate at which productive tokens such as wstETH can increase in value. This safeguard helps protect the protocol from sudden price spikes or exploits from mouths.

In this case, however, a configuration mismatch in CAPO caused the problem.

Error technical failure

Chaos Labs explained that the error originated from outdated parameters stored in a modern contract.

Two key values ​​are offline:

Since these have not been updated collectively, the CAPO calculates the temporary ceiling on the authorized exchange rate below the market rate.

This caused the protocol to drop the value of wstETH by 2.85% relative to its current market value.

Did you know this? Ave relies on price oracles, which are data feeds that provide real-time asset prices to smart contracts. If these feeds reflect short-term abnormal market prices from exchanges, the protocol automatically calculates collateral values ​​and can trigger liquidity.

Liquid fountain

As soon as the warranty ratios fall below the required threshold, the Aave's automated liquid engine is activated.

Liquidators, especially high-speed trading bots, have taken the initial collateral by paying off a portion of the borrower's debt and, in return, with a built-in discount.

Throughout the event, approximately $27 million in credit facilities were written off.

Liquidators ended up spending around 499 ETH in combined profits and liquidation bonuses, capitalizing on a short-term pricing error.

There is no bad debt incurred by the protocol.

Even with liquidity, Ave has maintained zero bad debt. “It had absolutely no impact on the Ave protocol,” says Ave founder Stani Kulekov.

According to Chaos Labs, the platform's core risk and liquidity strategies work as designed once positions breach their levels. Once the sites breached their safety thresholds, discharges were conducted according to design.

Therefore, the termination will remain limited to the affected individual borrowers and will not jeopardize the overall solvency or stability of the protocol. The resulting artificial depression in collateral values ​​pushed many borrower positions below liquidity thresholds.

Ave management proposed to compensate affected users by refunding recovery funds and supporting the Decentralized Autonomous Organization (DAO) treasury. This approach corresponds to a shifting pattern in DeFi governance, where protocols increasingly treat technical incidents as risks to system infrastructure. Instead of leaving them with permanent losses, they can act to compensate affected users.

A note on verbal risk in DeFi

The incident shows that Oracle's design remains one of the most important and vulnerable DeFi infrastructures.

Even minor configuration errors can have huge consequences when automated strategies manage billions of dollars in collateral.

Similar episodes have occurred on other DeFi platforms. For example, a misconfigured oracle once valued Coinbase's wrapped staked ETH (cbETH) at around $1 instead of roughly $2,200, causing widespread disruption.

Such issues highlight the ongoing challenges of maintaining reliable and accurate price feeds in a decentralized financial system.

wstETH and Lido were not responsible

Contributors to the Lido ecosystem have made it clear that the leaks did not stem from any malfunction or defect in wstETH itself.

The token operated normally throughout the event, and the underlying Lido staking protocol remained fully functional and intact.

The main issue seems to come from how Aave's lending protocol processes and interprets price data in its own risk management configuration.

Future DeFi lessons

As decentralized finance grows, protocols are increasingly incorporating sophisticated risk management systems to accommodate assets like wstETH that provide yield.

These properties present unique pricing challenges because their value increases over time as they accumulate rewards.

Therefore, effective risk models must accurately capture:

Even minor errors in these elements can escalate into widespread liquidation events.