HIGH 8.3 NVD
CVE-2026-104437
Zebra before 4.4.0 contains a consensus divergence vulnerability in V5 transparent signature verification, computing a ZIP-244 digest for SIGHASH_SINGLE inputs
Zebra before 4.4.0 contains a consensus divergence vulnerability in V5 transparent signature verification, computing a ZIP-244 digest for SIGHASH_SINGLE inputs lacking corresponding outputs instead of failing. Attackers can craft V5 transactions with fewer outputs than inputs that Zebra accepts and templates via getblocktemplate, producing blocks zcashd rejects.
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-cwfq-rfcr-8hmp
- https://www.vulncheck.com/advisories/zebra-before-4.4.0-consensus-split-via-sighash-single
This high severity vulnerability with a CVSS score of 8.3 was published on 2026-10-02 via NVD.
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