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Zcash Foundation Releases Zebra 4.5.1 Emergency Patch for Critical Consensus-Level Vulnerability

GateNews
Security IncidentsProject Progress
ZEC7.43%
According to Zcash Foundation, the organization released Zebra 4.5.1 today to patch a critical consensus-level vulnerability (GHSA-2prc-cj5x-4443) affecting P2SH (Pay-to-Script-Hash) transaction signature operation (sigop) counting. The flaw, which existed in version 4.5.0 released yesterday, could cause nodes to reach conflicting validation results and trigger a potential consensus fork. The vulnerability stems from inconsistent sigop counting logic across different implementations. Zcash Foundation strongly urged all node operators to upgrade immediately, stating that upgrading to 4.5.1 is the only way to ensure nodes remain on the correct chain and avoid potential fork risks.
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