UBUNTU-CVE-2026-9743

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Source

https://ubuntu.com/security/CVE-2026-9743

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9743.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-9743

Upstream

CVE-2026-9743

Published

2026-06-09T23:17:00Z

Modified

2026-06-12T09:04:22.422472853Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

In MongoDB Server 8.0, an aggregation stage can leave its _subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid address and crashing the process. This issue allows an authenticated user who can run aggregation pipelines to cause a denial of service by issuing a specially crafted aggregation followed by getMore on affected versions.

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

0Unknown 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_version": "1:2.4.9-1ubuntu2+esm2",
            "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"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9743.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

0Unknown 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_version": "1:2.6.10-0ubuntu1+esm2",
            "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"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9743.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

0Unknown 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_version": "1:3.6.3-0ubuntu1.4+esm2",
            "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"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9743.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

0Unknown 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_version": "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1",
            "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"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9743.json"