Zebra 4.4.0 Consensus Divergence via V5 SIGHASH_SINGLE Without Output
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.
CVE-2026-104435
Primary source · Revision 2
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-104435
zebra
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
zebra
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "ZcashFoundation",
"product": "zebra",
"versions": [
{
"status": "affected",
"version": "4.4.0",
"lessThan": "4.4.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.4.1",
"versionType": "semver"
}
],
"packageURL": "pkg:cargo/zebrad",
"defaultStatus": "unaffected"
},
{
"vendor": "ZcashFoundation",
"product": "zebra",
"versions": [
{
"status": "affected",
"version": "6.0.0",
"lessThan": "6.0.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.0.1",
"versionType": "semver"
}
],
"packageURL": "pkg:cargo/zebra-script",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-104435
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #72832 · Revision 2
- Added to Heist Feed
- Publisher date