CVE-2026-41583

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Source
https://cve.org/CVERecord?id=CVE-2026-41583
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41583.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-41583
Aliases
Published
2026-05-08T14:55:50Z
Modified
2026-10-28T02:30:50Z
Severity
  • 9.3 (Critical) CVSS_V4 - 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 CVSS Calculator
Summary
ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-573"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41583.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "zebra-script < 5.0.2"
                        },
                        {
                            "last_affected": "zebra-script < 5.0.2"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/zcashfoundation/zebra

Affected ranges

Type
GIT
Repo
https://github.com/zcashfoundation/zebra
Events
Introduced
aba329d6dca884f6d42bb4d36bda0010a071c2fc
Fixed
aba329d6dca884f6d42bb4d36bda0010a071c2fc
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "zebrad < 4.3.1"
                },
                {
                    "last_affected": "zebrad < 4.3.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandaloneSingleVersion"
        },
        {
            "cpe": "cpe:2.3:a:zfnd:zebrad:*:*:*:*:*:rust:*:*",
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "4.3.1"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Affected versions

zebrad < 4.*
zebrad < 4.3.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41583.json"