UBUNTU-CVE-2026-61818

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Source
https://ubuntu.com/security/CVE-2026-61818
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61818.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-61818
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, undo_partition() reads part_config.time_encoder as unrestricted text and interpolates it without identifier quoting into a dynamically executed SELECT statement. A role with partman_user access can store SQL rather than a function name, and the SQL executes with the privileges of the caller that invokes undo_partition(). The function is not part of the default background-worker path, which limits the automatic superuser escalation described by the related create-partition vulnerability, but a privileged caller can still have its available confidentiality, integrity, and availability permissions abused. 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-2026-61818.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-2026-61818.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-2026-61818.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-2026-61818.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-2026-61818.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-2026-61818.json"