Upstream information

CVE-2026-33218 at MITRE

Description

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.

SUSE information

Overall state of this security issue: Does not affect SUSE products

SUSE Bugzilla entry: 1260668 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References

SUSE Timeline for this CVE

CVE page created: Wed Mar 25 22:03:02 2026
CVE page last modified: Fri May 8 12:08:54 2026