Last weekend, the DeFi community received a harsh lesson: even the most reliable tools can fail due to human factors and excessive trust in automation.
⏰ When did this happen?
The incident occurred on February 15, 2026, immediately after the activation of the MIP-X43 management update in the Base network. The problem remained critical for several hours until emergency restrictions were implemented.
🛠 What went wrong?
The error occurred during the setup of the Chainlink price oracle. Instead of transmitting the price of the cbETH asset (Coinbase Wrapped ETH) in dollars, the oracle began broadcasting only its ratio to ETH (approximately 1.12).
As a result: the system 'thought' that cbETH was worth $1.12 instead of the actual $2 200.
🤖 AI and the "human factor":
Reports have emerged that the faulty oracle code may have been generated using an AI model (Claude Opus 4.6). This sparked heated discussions about the need for code written by AI to be ten times more thoroughly checked, especially regarding price feeds.
📊 Consequences in numbers:
1 096.317 cbETH were instantly bought back by liquidation bots for pennies.
$1.78 million — the amount of hopeless debt that now falls on the protocol.
Time lock trap: The Moonwell team was unable to fix the code instantly due to the 5-day waiting period mandated by decentralized governance rules.
🛡 Moonwell's reaction:
To stop the 'bleeding', risk managers at Anthias Labs urgently lowered lending and supply limits for cbETH to a minimum of 0.01. This blocked the possibility of further exploitation of the bug, but a full fix requires the completion of the time lock period.
💡 This case highlights: DeFi is becoming increasingly complex, and the integration of AI into development brings new risks. Oracles remain the most vulnerable point of any lending protocol.
Stay vigilant and diversify your assets in DeFi! 🛡
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