{"id":"CVE-2026-104435","title":"Zebra zebrad 4.4.0 and zebra-script 6.0.0 fail to enforce a ZIP-244 consensus rule, accepting V5 transparent inputs signed with SIGHASH_SINGLE that lack a corresponding output","summary":"Zebra zebrad 4.4.0 and zebra-script 6.0.0 fail to enforce a ZIP-244 consensus rule, accepting V5 transparent inputs signed with SIGHASH_SINGLE that lack a corresponding output. Attackers can broadcast crafted V5 transactions with more in…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-347"],"vendor":"ZcashFoundation","product":"zebra","affected":["zebra >= 4.4.0 < 4.4.1","zebra >= 6.0.0 < 6.0.1"],"published":"2026-10-02","updated":"2026-10-02","sourceUpdated":"2026-10-02T12:17:14.063","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104435","references":[{"url":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-pvmv-cwg8-v6c8","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/zebra-4.4.0-consensus-divergence-via-v5-sighash-single-without-output","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-02T12:17:44.334Z","slug":"CVE-2026-104435","body":"## Overview\n\nZebra zebrad 4.4.0 and zebra-script 6.0.0 fail to enforce a ZIP-244 consensus rule, accepting V5 transparent inputs signed with SIGHASH_SINGLE that lack a corresponding output. Attackers can broadcast crafted V5 transactions with more inputs than outputs that Zebra accepts but zcashd rejects, causing a network consensus split.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}