Zebra before 6.3.0 False Readiness via Discarded One-Hash FindBlocks Response
Zebra before 6.3.0 contains an improper exceptional condition check in ChainSync::obtain_tips that discards valid one-hash FindBlocks responses, falsely reporting close-to-tip status. Peers returning only the next block hash cause a zero-length sync sample, making the /ready endpoint return 200 OK while the node remains behind the tip.
CVE-2026-104432
Primary source · Revision 1
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-2026-104432
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
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "ZcashFoundation",
"product": "zebra",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "6.3.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.3.0",
"versionType": "semver"
}
],
"packageURL": "pkg:cargo/Zebrad",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-104432
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #9002 · Revision 1
- Added to Heist Feed
- Publisher date