{"schema":"threatline.record/2","record":{"id":"CVE-2026-104435","aliases":["GHSA-pvmv-cwg8-v6c8"],"summary":"Zebra 4.4.0 Consensus Divergence via V5 SIGHASH_SINGLE Without Output","details":"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.","categories":["Libraries & packages"],"product":"zebra","vendor":"ZcashFoundation","ecosystem":"crates.io","affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104435","source_modified_at":"2026-10-02T15:16:42.729Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"zebra","vendor":"ZcashFoundation","versions":[{"version":"4.4.0","status":"affected","versionType":"semver","lessThan":"4.4.1"},{"version":"4.4.1","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104435","source_modified_at":"2026-10-02T15:16:42.729Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"zebra","vendor":"ZcashFoundation","versions":[{"version":"6.0.0","status":"affected","versionType":"semver","lessThan":"6.0.1"},{"version":"6.0.1","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pvmv-cwg8-v6c8","source_modified_at":"2026-10-03T03:56:08.582762724Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zebrad","ecosystem":"crates.io","purl":"pkg:cargo/zebrad"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.4.1"}]}],"versions":[]},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pvmv-cwg8-v6c8","source_modified_at":"2026-10-03T03:56:08.582762724Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zebra-script","ecosystem":"crates.io","purl":"pkg:cargo/zebra-script"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.0.1"}]}],"versions":[]}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104435","source_modified_at":"2026-10-02T15:16:42.729Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zebra","ecosystem":null},"version":"4.4.1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104435","source_modified_at":"2026-10-02T15:16:42.729Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zebra","ecosystem":null},"version":"6.0.1","basis":"first unaffected version stated in the CVE record"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pvmv-cwg8-v6c8","source_modified_at":"2026-10-03T03:56:08.582762724Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zebrad","ecosystem":"crates.io","purl":"pkg:cargo/zebrad"},"version":"4.4.1"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pvmv-cwg8-v6c8","source_modified_at":"2026-10-03T03:56:08.582762724Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zebra-script","ecosystem":"crates.io","purl":"pkg:cargo/zebra-script"},"version":"6.0.1"}],"cvss":8.3,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00205,"percentile":0.09917,"score_date":"2026-10-23"},"published_at":"2026-10-02T11:38:12.487Z","modified_at":"2026-10-03T03:56:08.582762724Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-104435","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-02T15:16:42.729Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-pvmv-cwg8-v6c8","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-03T03:56:08.582762724Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-104435","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-pvmv-cwg8-v6c8","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/zebra-4.4.0-consensus-divergence-via-v5-sighash-single-without-output","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-02T15:16:28.895399Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-03T03:56:08.582762724Z","content_hash":"be2089dab8d723e0d613d79e8100bc3cd410835b9ac6bc0452e44832320d54fe"}}