UBUNTU-CVE-2025-43920

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Source

https://ubuntu.com/security/CVE-2025-43920

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-43920.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-43920

Upstream

CVE-2025-43920

Withdrawn

2026-03-03T05:33:15Z

Published

2025-04-20T01:15:00Z

Modified

2026-03-03T06:09:42Z

Severity

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

Summary

[none]

Details

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), in certain external archiver configurations, allows unauthenticated attackers to execute arbitrary OS commands via shell metacharacters in an email Subject line. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.

References

Affected packages

Ubuntu:Pro:16.04:LTS / mailman

Package

Name: mailman
Purl: pkg:deb/ubuntu/mailman@1:2.1.20-1ubuntu0.6+esm2?arch=source&distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*

1:2.1.20-1

1:2.1.20-1ubuntu0.1

1:2.1.20-1ubuntu0.3

1:2.1.20-1ubuntu0.4

1:2.1.20-1ubuntu0.5

1:2.1.20-1ubuntu0.6

1:2.1.20-1ubuntu0.6+esm1

1:2.1.20-1ubuntu0.6+esm2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "mailman",
            "binary_version": "1:2.1.20-1ubuntu0.6+esm2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-43920.json"

Ubuntu:18.04:LTS / mailman

Package

Name: mailman
Purl: pkg:deb/ubuntu/mailman@1:2.1.26-1ubuntu0.6?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*

1:2.1.23-1

1:2.1.24-1

1:2.1.25-1

1:2.1.26-1

1:2.1.26-1ubuntu0.1

1:2.1.26-1ubuntu0.2

1:2.1.26-1ubuntu0.3

1:2.1.26-1ubuntu0.4

1:2.1.26-1ubuntu0.5

1:2.1.26-1ubuntu0.6

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "mailman",
            "binary_version": "1:2.1.26-1ubuntu0.6"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-43920.json"

Ubuntu:Pro:20.04:LTS / mailman

Package

Name: mailman
Purl: pkg:deb/ubuntu/mailman@1:2.1.29-1ubuntu3.1+esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*

1:2.1.29-1

1:2.1.29-1build1

1:2.1.29-1ubuntu3

1:2.1.29-1ubuntu3.1

1:2.1.29-1ubuntu3.1+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "mailman",
            "binary_version": "1:2.1.29-1ubuntu3.1+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-43920.json"