JB Hack

Reported loss $50K
Bnb Chain
Spot Price Manipulation

What happened

On June 19, 2026, the JB token system on BNB Chain suffered a flash-loan-assisted price-manipulation exploit that drained approximately $50K from trading liquidity.

How it happened

The attacker borrowed flash liquidity, distorted the reserve or balance used as a price input, executed a pricing-sensitive token operation at the manipulated valuation, and unwound the position in the same transaction.

Protocol details

Classification Oracle Manipulation
Protocol Type Token
Implementation language Solidity

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