{"cve":"CVE-2026-104435","nvd":{"published":"2026-10-02T12:17:14.063","modified":"2026-10-02T17:59:09.430","status":"Deferred","description":"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 inputs than outputs that Zebra accepts but zcashd rejects, causing a network consensus split.","cvss_v4":{"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},"cvss_v3":{"version":"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},"cwes":["CWE-347"],"references":["https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-pvmv-cwg8-v6c8","https://www.vulncheck.com/advisories/zebra-4.4.0-consensus-divergence-via-v5-sighash-single-without-output"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-104435","score":0.00205,"percentile":0.10318,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-pvmv-cwg8-v6c8","url":"https://osv.dev/vulnerability/GHSA-pvmv-cwg8-v6c8","summary":"Zebra v4.4.0 still accepts V5 SIGHASH_SINGLE without a corresponding output","modified":"2026-10-03T03:56:08.582762724Z","packages":[{"ecosystem":"crates.io","name":"zebrad","purl":"pkg:cargo/zebrad","ranges":["<4.4.1"],"fixed":["4.4.1"]},{"ecosystem":"crates.io","name":"zebra-script","purl":"pkg:cargo/zebra-script","ranges":["<6.0.1"],"fixed":["6.0.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}