A major incident on the Aave platform has come to light, where a user swapped over $50 million in tokenized USDT for a return of only about $36,000 in AAVE tokens. The transaction, which occurred on March 12, 2026, was executed through Aave's integrated front-end swap widget, which routes orders via the CoW Swap decentralized exchange aggregator.
The swap involved 50,432,688 aEthUSDT for aEthAAVE. Due to the enormous size of the order relative to the available liquidity for that specific token pair, the trade was executed with a price impact of roughly 99.9%. This resulted in the user receiving approximately 327 aEthAAVE, valued at around $36,425 at the time of the swap. The transaction also generated swap fees of about $110,368.
Aave's incident report clarifies that the swap occurred outside the core Aave Protocol for lending and borrowing, utilizing only the front-end interface connected to CoW Swap solvers. The platform's interface did display a strong warning about the extreme price impact and potential for a total loss of value. The user was required to explicitly check a box acknowledging this warning before the swap button was enabled and the transaction could proceed.
In response, Aave founder Stani Kulechov announced the development of a new safety feature called 'Aave Shield'. This safeguard will automatically block any swap that carries a price impact exceeding 25%. Users wishing to execute such high-risk trades will need to manually disable the protection. Aave has also stated it will return the funds to the user if they make contact with the platform. As of the report, the user has not done so.
