{"id":"CVE-2026-41583","revision":"d1bfa89ec2b64728855ecac1f48bcbb0","records":[{"revision":"d1bfa89ec2b64728855ecac1f48bcbb0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-41583","aliases":[],"title":"ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling","description":"ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-script version 5.0.2, after a refactoring, Zebra failed to validate a consensus rule that restricted the possible values of sighash hash types for V5 transactions which were enabled in the NU5 network upgrade. Zebra nodes could thus accept and eventually mine a block that would be considered invalid by zcashd nodes, creating a consensus split between Zebra and zcashd nodes. In a similar vein, for V4 transactions, Zebra mistakenly used the \"canonical\" hash type when computing the sighash while zcashd (correctly per the spec) uses the raw value, which could also crate a consensus split. This issue has been patched in zebrad version 4.3.1 and zebra-script version 5.0.2.","state":0,"publishedAt":"2026-05-08T14:55:50.12+00:00","modifiedAt":"2026-05-08T19:42:57.297+00:00","affected":[{"ecosystem":"Vendor product","name":"zebra","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"ZcashFoundation\",\n                    \"product\": \"zebra\",\n                    \"versions\": [\n                        {\n                            \"version\": \"zebrad < 4.3.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"zebra-script < 5.0.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H","score":9.3,"severity":"CRITICAL"}],"references":["https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-8m29-fpq5-89jj"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-41583","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-41583","identifiers":["CVE-2026-41583"]},"retained":false,"historicalAffected":[]}],"coverage":[]}