UBUNTU-CVE-2026-115731

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Source
https://ubuntu.com/security/CVE-2026-115731
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115731.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-115731
Upstream
  • CVE-2026-115731
Published
2026-11-03T21:17:00Z
Modified
2026-11-05T11:45:50Z
Severity
  • 9.4 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.

References

Affected packages

Ubuntu:14.04:LTS / puppet

Package

Name
puppet
Purl
pkg:deb/ubuntu/puppet?arch=source&distro=trusty

Affected ranges

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

Affected versions

3.*
3.2.4-2ubuntu2
3.3.1-1ubuntu1
3.3.1-1ubuntu2
3.3.1-1ubuntu3
3.4.2-1
3.4.3-1
3.4.3-1ubuntu1
3.4.3-1ubuntu1.1
3.4.3-1ubuntu1.2
3.4.3-1ubuntu1.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "puppet",
            "binary_version": "3.4.3-1ubuntu1.3"
        },
        {
            "binary_name": "puppet-common",
            "binary_version": "3.4.3-1ubuntu1.3"
        },
        {
            "binary_name": "puppet-el",
            "binary_version": "3.4.3-1ubuntu1.3"
        },
        {
            "binary_name": "puppet-testsuite",
            "binary_version": "3.4.3-1ubuntu1.3"
        },
        {
            "binary_name": "puppetmaster",
            "binary_version": "3.4.3-1ubuntu1.3"
        },
        {
            "binary_name": "puppetmaster-common",
            "binary_version": "3.4.3-1ubuntu1.3"
        },
        {
            "binary_name": "puppetmaster-passenger",
            "binary_version": "3.4.3-1ubuntu1.3"
        },
        {
            "binary_name": "vim-puppet",
            "binary_version": "3.4.3-1ubuntu1.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115731.json"

Ubuntu:Pro:16.04:LTS / puppet

Package

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

Affected ranges

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

Affected versions

3.*
3.7.2-5ubuntu2
3.8.4-1ubuntu1
3.8.5-1ubuntu1
3.8.5-2
3.8.5-2ubuntu0.1
3.8.5-2ubuntu0.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "puppet",
            "binary_version": "3.8.5-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "puppet-common",
            "binary_version": "3.8.5-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "puppet-el",
            "binary_version": "3.8.5-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "puppet-testsuite",
            "binary_version": "3.8.5-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "puppetmaster",
            "binary_version": "3.8.5-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "puppetmaster-common",
            "binary_version": "3.8.5-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "puppetmaster-passenger",
            "binary_version": "3.8.5-2ubuntu0.1+esm1"
        },
        {
            "binary_name": "vim-puppet",
            "binary_version": "3.8.5-2ubuntu0.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115731.json"

Ubuntu:18.04:LTS / puppet

Package

Name
puppet
Purl
pkg:deb/ubuntu/puppet?arch=source&distro=bionic

Affected ranges

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

Affected versions

4.*
4.10.4-2ubuntu1
4.10.4-2ubuntu2
4.10.4-2ubuntu3
5.*
5.4.0-2ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "puppet",
            "binary_version": "5.4.0-2ubuntu3"
        },
        {
            "binary_name": "puppet-common",
            "binary_version": "5.4.0-2ubuntu3"
        },
        {
            "binary_name": "puppet-master",
            "binary_version": "5.4.0-2ubuntu3"
        },
        {
            "binary_name": "puppet-master-passenger",
            "binary_version": "5.4.0-2ubuntu3"
        },
        {
            "binary_name": "puppetmaster",
            "binary_version": "5.4.0-2ubuntu3"
        },
        {
            "binary_name": "puppetmaster-passenger",
            "binary_version": "5.4.0-2ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115731.json"

Ubuntu:20.04:LTS / puppet

Package

Name
puppet
Purl
pkg:deb/ubuntu/puppet?arch=source&distro=focal

Affected ranges

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

Affected versions

5.*
5.4.0-2ubuntu3
5.5.10-4ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "puppet",
            "binary_version": "5.5.10-4ubuntu3"
        },
        {
            "binary_name": "puppet-common",
            "binary_version": "5.5.10-4ubuntu3"
        },
        {
            "binary_name": "puppet-master",
            "binary_version": "5.5.10-4ubuntu3"
        },
        {
            "binary_name": "puppet-master-passenger",
            "binary_version": "5.5.10-4ubuntu3"
        },
        {
            "binary_name": "puppetmaster",
            "binary_version": "5.5.10-4ubuntu3"
        },
        {
            "binary_name": "puppetmaster-passenger",
            "binary_version": "5.5.10-4ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115731.json"

Ubuntu:22.04:LTS / puppet

Package

Name
puppet
Purl
pkg:deb/ubuntu/puppet?arch=source&distro=jammy

Affected ranges

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

Affected versions

5.*
5.5.22-1ubuntu1
5.5.22-4
5.5.22-4ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "puppet",
            "binary_version": "5.5.22-4ubuntu0.2"
        },
        {
            "binary_name": "puppet-master",
            "binary_version": "5.5.22-4ubuntu0.2"
        },
        {
            "binary_name": "puppet-master-passenger",
            "binary_version": "5.5.22-4ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115731.json"