UBUNTU-CVE-2026-33218

See a problem?
Please try reporting it to the source first.

Source

https://ubuntu.com/security/CVE-2026-33218

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33218.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33218

Upstream

CVE-2026-33218

Published

2026-03-27T00:00:00Z

Modified

2026-03-27T17:19:31.499642Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

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

Affected packages

Ubuntu:24.04:LTS / nats-server

Package

Name: nats-server
Purl: pkg:deb/ubuntu/nats-server@2.10.7-1ubuntu0.3?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.9.19-1build1

2.10.3-1

2.10.4-1

2.10.7-1

2.10.7-1ubuntu0.1

2.10.7-1ubuntu0.2

2.10.7-1ubuntu0.3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-nats-io-nats-server-dev",
            "binary_version": "2.10.7-1ubuntu0.3"
        },
        {
            "binary_name": "nats-server",
            "binary_version": "2.10.7-1ubuntu0.3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33218.json"

Ubuntu:25.10 / nats-server