Zcash bug costs 18 THORChain node operators about 140 RUNE while users lose nothing

Cryptopolitan · Tue, 20 Oct 2026 20:15:42 GMT

Hype 9/100 · Market impact 80/100 · Breaking 57/100

A Zcash matching bug eliminated about 140 RUNE from the bonds of 18 THORChain node operators, with THORChain disclosing the issue on Oct. 19, 2026. User and vault funds were unaffected, but native ZEC trading remains frozen until a fix ships. Node operators lock RUNE as collateral, and their stake absorbs losses when a vault fails; the loss stemmed from an outbound matching problem, and the repair is due in THORChain v3.21.0. ZEC trading is waiting for the NU6.3 network upgrade, set to activate at block 28,366,100, expected around 13:40 UTC on Friday, Oct. 23.

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