By Isaac • November 1, 2026 11:52 pm •
A one-block Ethereum reorganization exposed a refund bug inside THORChain, forced node operators to halt swaps across most supported networks and—at least temporarily—closed one route being used to move funds stolen from Binance.
Cointelegraph reports that the incident began at 11:34 UTC Saturday. THORChain credited a 10 ETH deposit, but an Ethereum reorganization later removed the block containing that deposit.
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When the swap missed its price limit, the protocol issued a refund from a vault that had never actually received those funds. The sender’s original deposit was also refunded, producing an extra 10 ETH payout.
THORChain’s automatic solvency checker detected the shortfall and halted Ethereum swaps. Node operators then paused assets across 10 networks while they
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