Vulnerability Details CVE-2026-34202
ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-chain version 6.0.1, a vulnerability in Zebra's transaction processing logic allows a remote, unauthenticated attacker to cause a Zebra node to panic (crash). This is triggered by sending a specially crafted V5 transaction that passes initial deserialization but fails during transaction ID calculation. This issue has been patched in zebrad version 4.3.0 and zebra-chain version 6.0.1.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 47.9%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-34202
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cpe:2.3:a:zfnd:zebra-chain:1.0.0
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cpe:2.3:a:zfnd:zebra-chain:2.0.0
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cpe:2.3:a:zfnd:zebra-chain:3.0.0
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cpe:2.3:a:zfnd:zebra-chain:3.0.1
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cpe:2.3:a:zfnd:zebra-chain:3.1.0
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cpe:2.3:a:zfnd:zebra-chain:4.0.0
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cpe:2.3:a:zfnd:zebra-chain:5.0.0
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cpe:2.3:a:zfnd:zebra-chain:6.0.0
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cpe:2.3:a:zfnd:zebra:1.0.0
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cpe:2.3:a:zfnd:zebra:1.0.1
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cpe:2.3:a:zfnd:zebra:1.1.0
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cpe:2.3:a:zfnd:zebra:1.2.0
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cpe:2.3:a:zfnd:zebra:1.3.0
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cpe:2.3:a:zfnd:zebra:1.4.0
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cpe:2.3:a:zfnd:zebra:1.5.0
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cpe:2.3:a:zfnd:zebra:1.5.1
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cpe:2.3:a:zfnd:zebra:1.5.2
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cpe:2.3:a:zfnd:zebra:1.6.0
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cpe:2.3:a:zfnd:zebra:1.6.1
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cpe:2.3:a:zfnd:zebra:1.7.0
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cpe:2.3:a:zfnd:zebra:1.8.0
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cpe:2.3:a:zfnd:zebra:1.9.0
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cpe:2.3:a:zfnd:zebra:2.0.0
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cpe:2.3:a:zfnd:zebra:2.0.1
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cpe:2.3:a:zfnd:zebra:2.1.0
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cpe:2.3:a:zfnd:zebra:2.2.0
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cpe:2.3:a:zfnd:zebra:2.3.0
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cpe:2.3:a:zfnd:zebra:2.4.0
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cpe:2.3:a:zfnd:zebra:2.4.2
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cpe:2.3:a:zfnd:zebra:2.5.0
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cpe:2.3:a:zfnd:zebra:3.0.0
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cpe:2.3:a:zfnd:zebra:3.1.0
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cpe:2.3:a:zfnd:zebra:4.0.0
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cpe:2.3:a:zfnd:zebra:4.1.0
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cpe:2.3:a:zfnd:zebra:4.2.0