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Vulnerable Software

Vulnerability Details CVE-2026-41583

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-script version 5.0.2, 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 between Zebra and zcashd nodes. In a similar vein, for V4 transactions, Zebra mistakenly used the "canonical" hash type when computing the sighash while zcashd (correctly per the spec) uses the raw value, which could also crate a consensus split. This issue has been patched in zebrad version 4.3.1 and zebra-script version 5.0.2.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 20.2%
CVSS Severity
CVSS v3 Score 9.1
Products affected by CVE-2026-41583
  • Zfnd » Zebra-Script » Version: 1.0.0
    cpe:2.3:a:zfnd:zebra-script:1.0.0
  • Zfnd » Zebra-Script » Version: 2.0.0
    cpe:2.3:a:zfnd:zebra-script:2.0.0
  • Zfnd » Zebra-Script » Version: 3.0.0
    cpe:2.3:a:zfnd:zebra-script:3.0.0
  • Zfnd » Zebra-Script » Version: 3.0.1
    cpe:2.3:a:zfnd:zebra-script:3.0.1
  • Zfnd » Zebra-Script » Version: 3.0.2
    cpe:2.3:a:zfnd:zebra-script:3.0.2
  • Zfnd » Zebra-Script » Version: 4.0.0
    cpe:2.3:a:zfnd:zebra-script:4.0.0
  • Zfnd » Zebra-Script » Version: 5.0.0
    cpe:2.3:a:zfnd:zebra-script:5.0.0
  • Zfnd » Zebra-Script » Version: 5.0.1
    cpe:2.3:a:zfnd:zebra-script:5.0.1
  • Zfnd » Zebrad » Version: 1.0.0
    cpe:2.3:a:zfnd:zebrad:1.0.0
  • Zfnd » Zebrad » Version: 1.0.1
    cpe:2.3:a:zfnd:zebrad:1.0.1
  • Zfnd » Zebrad » Version: 1.1.0
    cpe:2.3:a:zfnd:zebrad:1.1.0
  • Zfnd » Zebrad » Version: 1.2.0
    cpe:2.3:a:zfnd:zebrad:1.2.0
  • Zfnd » Zebrad » Version: 1.3.0
    cpe:2.3:a:zfnd:zebrad:1.3.0
  • Zfnd » Zebrad » Version: 1.4.0
    cpe:2.3:a:zfnd:zebrad:1.4.0
  • Zfnd » Zebrad » Version: 1.5.0
    cpe:2.3:a:zfnd:zebrad:1.5.0
  • Zfnd » Zebrad » Version: 1.5.2
    cpe:2.3:a:zfnd:zebrad:1.5.2
  • Zfnd » Zebrad » Version: 1.6.0
    cpe:2.3:a:zfnd:zebrad:1.6.0
  • Zfnd » Zebrad » Version: 1.6.1
    cpe:2.3:a:zfnd:zebrad:1.6.1
  • Zfnd » Zebrad » Version: 1.7.0
    cpe:2.3:a:zfnd:zebrad:1.7.0
  • Zfnd » Zebrad » Version: 1.8.0
    cpe:2.3:a:zfnd:zebrad:1.8.0
  • Zfnd » Zebrad » Version: 1.9.0
    cpe:2.3:a:zfnd:zebrad:1.9.0
  • Zfnd » Zebrad » Version: 2.0.1
    cpe:2.3:a:zfnd:zebrad:2.0.1
  • Zfnd » Zebrad » Version: 2.1.0
    cpe:2.3:a:zfnd:zebrad:2.1.0
  • Zfnd » Zebrad » Version: 2.2.0
    cpe:2.3:a:zfnd:zebrad:2.2.0
  • Zfnd » Zebrad » Version: 2.3.0
    cpe:2.3:a:zfnd:zebrad:2.3.0
  • Zfnd » Zebrad » Version: 2.4.0
    cpe:2.3:a:zfnd:zebrad:2.4.0
  • Zfnd » Zebrad » Version: 2.4.1
    cpe:2.3:a:zfnd:zebrad:2.4.1
  • Zfnd » Zebrad » Version: 2.4.2
    cpe:2.3:a:zfnd:zebrad:2.4.2
  • Zfnd » Zebrad » Version: 2.5.0
    cpe:2.3:a:zfnd:zebrad:2.5.0
  • Zfnd » Zebrad » Version: 3.0.0
    cpe:2.3:a:zfnd:zebrad:3.0.0
  • Zfnd » Zebrad » Version: 3.1.0
    cpe:2.3:a:zfnd:zebrad:3.1.0
  • Zfnd » Zebrad » Version: 4.0.0
    cpe:2.3:a:zfnd:zebrad:4.0.0
  • Zfnd » Zebrad » Version: 4.1.0
    cpe:2.3:a:zfnd:zebrad:4.1.0
  • Zfnd » Zebrad » Version: 4.2.0
    cpe:2.3:a:zfnd:zebrad:4.2.0
  • Zfnd » Zebrad » Version: 4.3.0
    cpe:2.3:a:zfnd:zebrad:4.3.0


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