Decentralized lending protocol Moonwell halted new borrowing across its Base Core Markets after a MAMO collateral price-manipulation attack drained roughly $8.7 million in liquid assets. CertiK and PeckShield pegged losses near that figure, while Blockaid flagged about 50.6 cbBTC worth more than $4 million leaving the mCBTC market; proceeds were consolidated into 8,728,318 DAI on Ethereum. The attacker pushed thinly traded MAMO—about $6 million in market cap and roughly $1.18 million in 24-hour volume before the assault—across a wide Aerodrome range from as low as $0.0101 to as high as $0.4739, then borrowed real cbBTC, ETH and USDC that were not repaid. Moonwell set all Base Core Market borrow caps and MAMO and WELL supply caps to 1 wei while investigating, a freeze that idles lending against $71.5 million in TVL and about $8.6 million in annualized fees. Mamo said its own contracts were not compromised but warned some USDC withdrawals routed through Moonwell may be delayed; Morpho-held funds are unaffected. The episode is Moonwell’s second collateral-pricing failure this year after a cbETH oracle mispricing that left $1.78 million in bad debt, and it lands amid repeated oracle-style drains across DeFi.