CVE catalog
CVE-2026-40881
ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-network version 5.0.1, when deserializing addr or addrv2 messages, which contain vectors of addresses, Zebra wou
- Severity
- Medium · CVSS 6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.26% · Oct 25, 2026
ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-network version 5.0.1, when deserializing addr or addrv2 messages, which contain vectors of addresses, Zebra would fully deserialize them up to a maximum length (over 233,000) that was derived from the 2 MiB message size limit. This is much larger than the actual limit of 1,000 messages from the specification. Zebra would eventually check that limit but, at that point, the memory for the larger vector was already allocated. An attacker could cause out-of-memory aborts in Zebra by sending multiple such messages over different connections. This vulnerability is fixed in zebrad version 4.3.0 and zebra-network version 5.0.1.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | zebra-network | Not reported | 5.0.1 | fixed |
| Cpe | zebrad | Not reported | 4.3.1 | fixed |
| Cpe | zebra-network | Not reported | 5.0.1 | fixed |
| Cpe | zebrad | Not reported | 4.3.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | zebra-network | cpe | Not reported | 5.0.1 | Not reported | Not reported | Not reported |
| Cpe | zebrad | cpe | Not reported | 4.3.1 | Not reported | Not reported | Not reported |
| Cpe | zebra-network | cpe | Not reported | 5.0.1 | Not reported | NVD-CVE-2026-40881 | Not reported |
| Cpe | zebrad | cpe | Not reported | 4.3.1 | Not reported | NVD-CVE-2026-40881 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: