UBUNTU-CVE-2026-58211

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Source
https://ubuntu.com/security/CVE-2026-58211
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-58211.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-58211
Upstream
Published
2026-07-08T21:16:00Z
Modified
2026-07-15T19:47:48Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, a client could be registered as the configured no_auth_user through a parser path used when the first client operation was not CONNECT, bypassing user-level connection restrictions such as allowed_connection_types or proxy_required that normal authentication would apply. This issue is fixed in versions 2.14.3 and 2.12.12.

References

Affected packages

Ubuntu:24.04:LTS / nats-server

Package

Name
nats-server
Purl
pkg:deb/ubuntu/nats-server?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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-2026-58211.json"

Ubuntu:25.10 / nats-server

Package

Name
nats-server
Purl
pkg:deb/ubuntu/nats-server?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.10.24-1
2.10.27-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-github-nats-io-nats-server-dev",
            "binary_version": "2.10.27-1"
        },
        {
            "binary_name": "nats-server",
            "binary_version": "2.10.27-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-58211.json"

Ubuntu:Pro:26.04:LTS / nats-server

Package

Name
nats-server
Purl
pkg:deb/ubuntu/nats-server?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.10.27-1
2.10.27-1build1
2.10.27-1ubuntu0.26.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-github-nats-io-nats-server-dev",
            "binary_version": "2.10.27-1ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "nats-server",
            "binary_version": "2.10.27-1ubuntu0.26.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-58211.json"