VDB
DEBIAN-CVE-2026-33218
DEBIAN-CVE-2026-33218
PUBLISHED
CVSS 7.5 HIGH
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.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | nats-server | 0, 2.10.27-1, 2.12.4-1 |
| Debian:12 | nats-server | 2.12.4-1, 2.9.19-1, 2.12.6-1 |
| Debian:14 | nats-server | 0, 2.10.27-1, 2.12.4-1 |
Timeline
- Mar 25, 2026 CVE Published
- Apr 28, 2026 CVE Updated