UBUNTU-CVE-2026-61820

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Source
https://ubuntu.com/security/CVE-2026-61820
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61820.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-61820
Upstream
Published
2026-09-21T00:00:00Z
Modified
2026-09-21T21:39:52Z
Severity
  • 8.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, inherit_template_properties() manually surrounds primary-key column names from pg_attribute.attname with double quotes without escaping embedded double-quote characters. A partman_user who owns a template table can create a crafted column name that breaks out of the generated ALTER TABLE ADD PRIMARY KEY identifier when the background worker applies the key to a child partition. The generated SQL then executes with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, permitting database-wide compromise and operating-system command execution as the PostgreSQL service account. The crafted catalog identifier persists until removed and can trigger again during later partition creation. This issue is fixed in version 5.5.0.

References

Affected packages

Ubuntu:16.04:LTS
pg-partman

Package

Name
pg-partman
Purl
pkg:deb/ubuntu/pg-partman?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*
2.2.2-1
2.2.2-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "postgresql-9.5-partman",
            "binary_version":  "2.2.2-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61820.json"
Ubuntu:18.04:LTS
pg-partman

Package

Name
pg-partman
Purl
pkg:deb/ubuntu/pg-partman?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*
2.6.3-1
3.*
3.1.0-1
3.1.1-1
3.1.2-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "postgresql-10-partman",
            "binary_version":  "3.1.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61820.json"
Ubuntu:20.04:LTS
pg-partman

Package

Name
pg-partman
Purl
pkg:deb/ubuntu/pg-partman?arch=source&distro=focal

Affected ranges

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

Affected versions

4.*
4.0.0-1
4.2.0-1
4.2.2-1
4.3.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "postgresql-12-partman",
            "binary_version":  "4.3.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61820.json"
Ubuntu:22.04:LTS
pg-partman

Package

Name
pg-partman
Purl
pkg:deb/ubuntu/pg-partman?arch=source&distro=jammy

Affected ranges

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

Affected versions

4.*
4.5.1-1
4.6.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "postgresql-14-partman",
            "binary_version":  "4.6.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61820.json"
Ubuntu:24.04:LTS
pg-partman

Package

Name
pg-partman
Purl
pkg:deb/ubuntu/pg-partman?arch=source&distro=noble

Affected ranges

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

Affected versions

4.*
4.7.3-1
5.*
5.0.0-2
5.0.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "postgresql-16-partman",
            "binary_version":  "5.0.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61820.json"
Ubuntu:26.04:LTS
pg-partman

Package

Name
pg-partman
Purl
pkg:deb/ubuntu/pg-partman?arch=source&distro=resolute

Affected ranges

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

Affected versions

5.*
5.2.4-1
5.3.1-2
5.4.0-1
5.4.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "postgresql-18-partman",
            "binary_version":  "5.4.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61820.json"