42DAO: $912K BTCB Exploit via Oracle Flaw

42DAO lost $912K when an attacker triggered multiple BTCB vault liquidations in one transaction by feeding an abnormal oracle price. The protocol had no oracle price deviation checks or liquidation delay, allowing the exploit at address 0x9d8dd9f2d734675e2bfcc142d1c7a45609ca213c. BTCB price manipulation risks and DeFi protocol exploit patterns continue to surface in 2026, while oracle price deviation remains a core weakness across lending protocols tied to BTC markets.