{"id":"CVE-2026-104437","revision":"30ea415cfb4547c2891f866e383de49a","records":[{"revision":"30ea415cfb4547c2891f866e383de49a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-104437","aliases":[],"title":"Zebra before 4.4.0 Consensus Split via SIGHASH_SINGLE Missing-Output Handling","description":"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.","state":0,"publishedAt":"2026-10-02T11:38:13.855+00:00","modifiedAt":"2026-10-06T02:42:57.596+00:00","affected":[{"ecosystem":"Vendor product","name":"zebra","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"ZcashFoundation\",\n                    \"product\": \"zebra\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:cargo/zebrad\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"4.4.0\"\n                        },\n                        {\n                            \"version\": \"4.4.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.3,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","score":7.4,"severity":"HIGH"}],"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-missing-output-handling"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-104437","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-104437","identifiers":["CVE-2026-104437"]},"retained":false,"historicalAffected":[]}],"coverage":[]}