{"id":"EUVD-2026-28653","revision":"fe210fb6bd6c406bbde0b4cd2613b054","records":[{"revision":"fe210fb6bd6c406bbde0b4cd2613b054","observedAt":"2026-10-30T06:53:12.388+00:00","statement":{"source":"euvd","id":"EUVD-2026-28653","aliases":["CVE-2026-41583"],"title":"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 …","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":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD 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":null}],"references":["https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-8m29-fpq5-89jj"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-28653","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 8, 2026, 2:55:50 PM","dateUpdated":"May 8, 2026, 7:42:57 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-28653","identifiers":["EUVD-2026-28653","CVE-2026-41583"]},"retained":false,"historicalAffected":[]}],"coverage":[]}