UBUNTU-CVE-2026-18703

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Source
https://ubuntu.com/security/CVE-2026-18703
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18703.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-18703
Upstream
Published
2026-08-11T19:17:00Z
Modified
2026-09-02T19:35:30Z
Severity
  • 4.2 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • 2.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow authentication through a method the administrator intended to disable.

References

Affected packages

Ubuntu:Pro:14.04:LTS / mongodb

Package

Name
mongodb
Purl
pkg:deb/ubuntu/mongodb?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

1:2.*
1:2.4.6-0ubuntu5
1:2.4.6-0ubuntu6
1:2.4.8-1ubuntu1
1:2.4.8-2
1:2.4.9-1
1:2.4.9-1ubuntu1
1:2.4.9-1ubuntu2
1:2.4.9-1ubuntu2+esm2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "mongodb",
            "binary_version":  "1:2.4.9-1ubuntu2+esm2"
        },
        {
            "binary_name":  "mongodb-clients",
            "binary_version":  "1:2.4.9-1ubuntu2+esm2"
        },
        {
            "binary_name":  "mongodb-server",
            "binary_version":  "1:2.4.9-1ubuntu2+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18703.json"

Ubuntu:Pro:16.04:LTS / mongodb

Package

Name
mongodb
Purl
pkg:deb/ubuntu/mongodb?arch=source&distro=esm-apps%2Fxenial

Affected ranges

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

Affected versions

1:2.*
1:2.6.10-0ubuntu1
1:2.6.10-0ubuntu1+esm2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "mongodb",
            "binary_version":  "1:2.6.10-0ubuntu1+esm2"
        },
        {
            "binary_name":  "mongodb-clients",
            "binary_version":  "1:2.6.10-0ubuntu1+esm2"
        },
        {
            "binary_name":  "mongodb-server",
            "binary_version":  "1:2.6.10-0ubuntu1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18703.json"

Ubuntu:Pro:18.04:LTS / mongodb

Package

Name
mongodb
Purl
pkg:deb/ubuntu/mongodb?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

1:3.*
1:3.4.7-1
1:3.4.7-1ubuntu1
1:3.4.7-1ubuntu2
1:3.4.7-1ubuntu4
1:3.4.14-3ubuntu1
1:3.4.14-3ubuntu2
1:3.6.3-0ubuntu1
1:3.6.3-0ubuntu1.1
1:3.6.3-0ubuntu1.3
1:3.6.3-0ubuntu1.4
1:3.6.3-0ubuntu1.4+esm1
1:3.6.3-0ubuntu1.4+esm2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "mongodb",
            "binary_version":  "1:3.6.3-0ubuntu1.4+esm2"
        },
        {
            "binary_name":  "mongodb-clients",
            "binary_version":  "1:3.6.3-0ubuntu1.4+esm2"
        },
        {
            "binary_name":  "mongodb-server",
            "binary_version":  "1:3.6.3-0ubuntu1.4+esm2"
        },
        {
            "binary_name":  "mongodb-server-core",
            "binary_version":  "1:3.6.3-0ubuntu1.4+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18703.json"

Ubuntu:Pro:20.04:LTS / mongodb

Package

Name
mongodb
Purl
pkg:deb/ubuntu/mongodb?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

1:3.*
1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu2
1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5
1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.2
1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3
1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "mongodb",
            "binary_version":  "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
        },
        {
            "binary_name":  "mongodb-clients",
            "binary_version":  "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
        },
        {
            "binary_name":  "mongodb-server",
            "binary_version":  "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
        },
        {
            "binary_name":  "mongodb-server-core",
            "binary_version":  "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18703.json"