NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, a client which can connect to the leafnode port can crash the nats-server with a certain malformed message pre-authentication. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, disable leafnode support if not needed or restrict network connections to the leafnode port, if plausible without compromising the service offered.
References
| Link | Resource |
|---|---|
| https://advisories.nats.io/CVE/secnote-2026-10.txt | Mitigation Vendor Advisory |
| https://github.com/nats-io/nats-server/security/advisories/GHSA-vprv-35vv-q339 | Mitigation Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
26 Mar 2026, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://advisories.nats.io/CVE/secnote-2026-10.txt - Mitigation, Vendor Advisory | |
| References | () https://github.com/nats-io/nats-server/security/advisories/GHSA-vprv-35vv-q339 - Mitigation, Vendor Advisory | |
| First Time |
Linuxfoundation
Linuxfoundation nats-server |
|
| CPE | cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:* |
25 Mar 2026, 20:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-03-25 20:16
Updated : 2026-03-26 17:15
NVD link : CVE-2026-33218
Mitre link : CVE-2026-33218
CVE.ORG link : CVE-2026-33218
JSON object : View
Products Affected
linuxfoundation
- nats-server
CWE
CWE-20
Improper Input Validation