CVE-2026-104437

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Source
https://cve.org/CVERecord?id=CVE-2026-104437
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104437.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-104437
Aliases
Published
2026-10-02T11:38:13Z
Modified
2026-10-21T02:54:31Z
Severity
  • 8.3 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Zebra before 4.4.0 Consensus Split via SIGHASH_SINGLE Missing-Output Handling
Details

Zebra before 4.4.0 contains a consensus divergence vulnerability in V5 transparent signature verification, computing a ZIP-244 digest for SIGHASH_SINGLE inputs lacking corresponding outputs instead of failing. Attackers can craft V5 transactions with fewer outputs than inputs that Zebra accepts and templates via getblocktemplate, producing blocks zcashd rejects.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-347"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104437.json"
}
References

Affected packages

Git / github.com/zcashfoundation/zebra

Affected ranges

Type
GIT
Repo
https://github.com/zcashfoundation/zebra
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
589d64b9b7ea6ab4c32ecab41ba6b74f26907940
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "4.4.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "4.4.0"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

4.*
4.3.1
v1.*
v1.0.0
v1.0.0-alpha.0
v1.0.0-alpha.1
v1.0.0-alpha.10
v1.0.0-alpha.11
v1.0.0-alpha.12
v1.0.0-alpha.13
v1.0.0-alpha.14
v1.0.0-alpha.15
v1.0.0-alpha.16
v1.0.0-alpha.17
v1.0.0-alpha.18
v1.0.0-alpha.19
v1.0.0-alpha.2
v1.0.0-alpha.3
v1.0.0-alpha.4
v1.0.0-alpha.5
v1.0.0-alpha.6
v1.0.0-alpha.7
v1.0.0-alpha.8
v1.0.0-alpha.9
v1.0.0-beta.0
v1.0.0-beta.1
v1.0.0-beta.10
v1.0.0-beta.11
v1.0.0-beta.12
v1.0.0-beta.13
v1.0.0-beta.14
v1.0.0-beta.15
v1.0.0-beta.2
v1.0.0-beta.3
v1.0.0-beta.4
v1.0.0-beta.5
v1.0.0-beta.6
v1.0.0-beta.7
v1.0.0-beta.8
v1.0.0-beta.9
v1.0.0-rc.0
v1.0.0-rc.1
v1.0.0-rc.2
v1.0.0-rc.3
v1.0.0-rc.4
v1.0.0-rc.5
v1.0.0-rc.6
v1.0.0-rc.7
v1.0.0-rc.8
v1.0.0-rc.9
v1.0.1
v1.1.0
v1.2.0
v1.3.0
v1.4.0
v1.5.0
v1.5.1
v1.5.2
v1.6.0
v1.6.1
v1.7.0
v1.8.0
v1.9.0
v2.*
v2.0.0
v2.0.0-rc.0
v2.0.1
v2.1.0
v2.2.0
v2.3.0
v2.4.0
v2.4.2
v2.5.0
v3.*
v3.0.0
v3.0.0-rc.0
v3.1.0
v4.*
v4.0.0
v4.1.0
v4.2.0
v4.3.0
v4.3.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104437.json"