Zebra 4.4.1 urgently fix one Zcash consensus bug, nodes must upgrade

Published: 2026-05-04 21:48:35 |

Zcash Foundation don release Zebra 4.4.1, critical security update wey fix consensus-critical wahala wey dey affect Zcash node operators. Zebra 4.4.1 fix bug wey make Zebra fit accept V5 transparent transactions wey get SIGHASH_SINGLE signatures even when the corresponding transparent output for the same index no dey. Instead make validation fail, Zebra give the digest computation to the underlying sighash library, wey produce digest over empty output set. This one cause validation mismatch: Zebra fit accept transactions wey zcashd go reject, and that one fit raise risk of consensus split between Zebra and zcashd nodes. The advisory talk say there no known workarounds, and operators wey upgrade to Zebra 4.4.0 just three days before must upgrade again to Zebra 4.4.1. Security reference: GHSA-pvmv-cwg8-v6c8. For crypto traders, this na signal of infrastructure risk. If wallets, indexers, or trading systems dey rely on lagging or disagreeing Zcash nodes, e fit temporarily affect network stability, execution reliability, and sentiment around ZEC infrastructure.

Neutral

Dis news na na wetin fix node infrastructure security no be protocol economic change. For short term, di risk say consensus-validation no go match fit cause operational friction (e.g., temporary confusion between services wey connect to Zebra vs zcashd), wey fit small affect trader sentiment for ZEC. But di strong, time-sensitive recommendation to upgrade to Zebra 4.4.1 and say no known workarounds show say market impact suppose fade quick once operators update.