Zebra Vulnerable to Consensus Divergence in Transparent Sighash Hash-Type Handling — CVE-2026-41583

Summary

# CVE-2026-41583: Consensus Divergence in Transparent Sighash Hash-Type Handling ## Summary After a refactoring, Zebra failed to validate a consensus rule that restricted the possible values of sighash hash types for V5 transactions which were enabled in the NU5 network upgrade. Zebra nodes could thus accept and eventually mine a block that would be considered invalid by zcashd nodes, creating a consensus split…

Product

rust: zebrad | rust: zebra-script

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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