Zebra before 11.0.0 Denial of Service via getblock Verbosity 2
The getblock RPC method in zebra-rpc before 11.0.0, used by the Zcash Foundation's Zebra node, panics on verbosity 2 for a side-chain block because the block's -1 confirmations sentinel is converted to u32 with .expect(), aborting the process. Remote unauthenticated attackers, directly or through lightwalletd, can repeat this call to keep the node in a crash loop.
CVE-2026-104428
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-2026-104428
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": "11.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "11.0.0",
"versionType": "semver"
}
],
"packageURL": "pkg:cargo/zebra-rpc",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-104428
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #9001 · Revision 1
- Added to Heist Feed
- Publisher date