UBUNTU-CVE-2026-6638

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Source
https://ubuntu.com/security/CVE-2026-6638
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6638.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-6638
Upstream
  • CVE-2026-6638
Downstream
Related
Published
2026-05-14T14:16:00Z
Modified
2026-05-21T23:15:06.477267216Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

SQL injection in PostgreSQL logical replication ALTER SUBSCRIPTION ... REFRESH PUBLICATION allows a subscriber table creator to execute arbitrary SQL with the subscription's publication-side credentials. The attack takes effect at the next REFRESH PUBLICATION. Within major versions 16, 17, and 18, minor versions before PostgreSQL 18.4, 17.10, and 16.14 are affected. Versions before PostgreSQL 16 are unaffected.

References

Affected packages

Ubuntu:20.04:LTS
postgresql-12

Package

Name
postgresql-12
Purl
pkg:deb/ubuntu/postgresql-12?arch=source&distro=focal

Affected ranges

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

Affected versions

12.*
12.0-1
12.1-1
12.1-2build1
12.2-1
12.2-1ubuntu2
12.2-4
12.4-0ubuntu0.20.04.1
12.5-0ubuntu0.20.04.1
12.6-0ubuntu0.20.04.1
12.7-0ubuntu0.20.04.1
12.8-0ubuntu0.20.04.1
12.9-0ubuntu0.20.04.1
12.10-0ubuntu0.20.04.1
12.11-0ubuntu0.20.04.1
12.12-0ubuntu0.20.04.1
12.13-0ubuntu0.20.04.1
12.14-0ubuntu0.20.04.1
12.15-0ubuntu0.20.04.1
12.16-0ubuntu0.20.04.1
12.17-0ubuntu0.20.04.1
12.18-0ubuntu0.20.04.1
12.19-0ubuntu0.20.04.1
12.20-0ubuntu0.20.04.1
12.22-0ubuntu0.20.04.1
12.22-0ubuntu0.20.04.2
12.22-0ubuntu0.20.04.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "postgresql-12",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "postgresql-client-12",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "postgresql-doc-12",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "postgresql-plperl-12",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "postgresql-plpython3-12",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "postgresql-pltcl-12",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        },
        {
            "binary_name": "postgresql-server-dev-12",
            "binary_version": "12.22-0ubuntu0.20.04.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6638.json"
Ubuntu:22.04:LTS
postgresql-14

Package

Name
postgresql-14
Purl
pkg:deb/ubuntu/postgresql-14?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
14.23-0ubuntu0.22.04.1

Affected versions

14.*
14.1-1ubuntu1
14.2-1
14.2-1ubuntu1
14.3-0ubuntu0.22.04.1
14.4-0ubuntu0.22.04.1
14.5-0ubuntu0.22.04.1
14.6-0ubuntu0.22.04.1
14.7-0ubuntu0.22.04.1
14.8-0ubuntu0.22.04.1
14.9-0ubuntu0.22.04.1
14.10-0ubuntu0.22.04.1
14.11-0ubuntu0.22.04.1
14.12-0ubuntu0.22.04.1
14.13-0ubuntu0.22.04.1
14.15-0ubuntu0.22.04.1
14.17-0ubuntu0.22.04.1
14.18-0ubuntu0.22.04.1
14.19-0ubuntu0.22.04.1
14.20-0ubuntu0.22.04.1
14.22-0ubuntu0.22.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "postgresql-14",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "postgresql-client-14",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "postgresql-doc-14",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "postgresql-plperl-14",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "postgresql-plpython3-14",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "postgresql-pltcl-14",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        },
        {
            "binary_name": "postgresql-server-dev-14",
            "binary_version": "14.23-0ubuntu0.22.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6638.json"
Ubuntu:24.04:LTS
postgresql-16

Package

Name
postgresql-16
Purl
pkg:deb/ubuntu/postgresql-16?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
16.14-0ubuntu0.24.04.1

Affected versions

16.*
16.0-2
16.1-1
16.1-1build1
16.1-1build3
16.2-1
16.2-1ubuntu2
16.2-1ubuntu3
16.2-1ubuntu4
16.3-0ubuntu0.24.04.1
16.4-0ubuntu0.24.04.1
16.4-0ubuntu0.24.04.2
16.6-0ubuntu0.24.04.1
16.8-0ubuntu0.24.04.1
16.9-0ubuntu0.24.04.1
16.10-0ubuntu0.24.04.1
16.11-0ubuntu0.24.04.1
16.13-0ubuntu0.24.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-16",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-client-16",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-doc-16",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-plperl-16",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-plpython3-16",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-pltcl-16",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-server-dev-16",
            "binary_version": "16.14-0ubuntu0.24.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6638.json"
Ubuntu:25.10
postgresql-17

Package

Name
postgresql-17
Purl
pkg:deb/ubuntu/postgresql-17?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
17.10-0ubuntu0.25.10.1

Affected versions

17.*
17.4-1
17.4-2
17.5-1
17.5-1build1
17.6-1
17.6-1build1
17.7-0ubuntu0.25.10.1
17.9-0ubuntu0.25.10.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "postgresql-17",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "postgresql-client-17",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "postgresql-doc-17",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "postgresql-plperl-17",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "postgresql-plpython3-17",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "postgresql-pltcl-17",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "postgresql-server-dev-17",
            "binary_version": "17.10-0ubuntu0.25.10.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6638.json"
Ubuntu:26.04:LTS
postgresql-18

Package

Name
postgresql-18
Purl
pkg:deb/ubuntu/postgresql-18?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
18.4-0ubuntu0.26.04.1

Affected versions

18.*
18.0-1
18.1-1
18.1-1ubuntu1
18.1-1ubuntu2
18.1-2
18.3-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "libpq-oauth",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-18",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-18-jit",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-client-18",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-doc-18",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-plperl-18",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-plpython3-18",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-pltcl-18",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-server-dev-18",
            "binary_version": "18.4-0ubuntu0.26.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6638.json"
Ubuntu:Pro:14.04:LTS
postgresql-9.3

Package

Name
postgresql-9.3
Purl
pkg:deb/ubuntu/postgresql-9.3?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

9.*
9.3.1-1
9.3.2-1
9.3.2-1ubuntu1
9.3.2-1ubuntu2
9.3.3-1
9.3.3-1bzr1
9.3.3-1bzr2
9.3.4-1
9.3.5-0ubuntu0.14.04.1
9.3.6-0ubuntu0.14.04
9.3.7-0ubuntu0.14.04
9.3.8-0ubuntu0.4.04
9.3.9-0ubuntu0.14.04
9.3.10-0ubuntu0.14.04
9.3.11-0ubuntu0.14.04
9.3.12-0ubuntu0.14.04
9.3.13-0ubuntu0.14.04
9.3.14-0ubuntu0.14.04
9.3.15-0ubuntu0.14.04
9.3.16-0ubuntu0.14.04
9.3.17-0ubuntu0.14.04
9.3.18-0ubuntu0.14.04.1
9.3.19-0ubuntu0.14.04
9.3.20-0ubuntu0.14.04
9.3.21-0ubuntu0.14.04
9.3.22-0ubuntu0.14.04
9.3.23-0ubuntu0.14.04
9.3.24-0ubuntu0.14.04
9.3.24-0ubuntu0.14.04+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "postgresql-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "postgresql-client-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "postgresql-contrib-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "postgresql-doc-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "postgresql-plperl-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "postgresql-plpython-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "postgresql-plpython3-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "postgresql-pltcl-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        },
        {
            "binary_name": "postgresql-server-dev-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6638.json"
Ubuntu:Pro:16.04:LTS
postgresql-9.5

Package

Name
postgresql-9.5
Purl
pkg:deb/ubuntu/postgresql-9.5?arch=source&distro=esm-infra%2Fxenial

Affected ranges

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

Affected versions

9.*
9.5.0-1
9.5.0-2
9.5.0-3
9.5.1-1
9.5.2-1
9.5.3-0ubuntu0.16.04
9.5.4-0ubuntu0.16.04
9.5.5-0ubuntu0.16.04
9.5.6-0ubuntu0.16.04
9.5.7-0ubuntu0.16.04
9.5.8-0ubuntu0.16.04.1
9.5.9-0ubuntu0.16.04
9.5.10-0ubuntu0.16.04
9.5.11-0ubuntu0.16.04
9.5.12-0ubuntu0.16.04
9.5.13-0ubuntu0.16.04
9.5.14-0ubuntu0.16.04
9.5.16-0ubuntu0.16.04.1
9.5.17-0ubuntu0.16.04.1
9.5.18-0ubuntu0.16.04.1
9.5.19-0ubuntu0.16.04.1
9.5.21-0ubuntu0.16.04.1
9.5.23-0ubuntu0.16.04.1
9.5.24-0ubuntu0.16.04.1
9.5.25-0ubuntu0.16.04.1
9.5.25-0ubuntu0.16.04.1+esm1
9.5.25-0ubuntu0.16.04.1+esm2
9.5.25-0ubuntu0.16.04.1+esm3
9.5.25-0ubuntu0.16.04.1+esm4
9.5.25-0ubuntu0.16.04.1+esm5
9.5.25-0ubuntu0.16.04.1+esm6
9.5.25-0ubuntu0.16.04.1+esm7
9.5.25-0ubuntu0.16.04.1+esm8
9.5.25-0ubuntu0.16.04.1+esm10

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "postgresql-9.5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "postgresql-client-9.5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "postgresql-contrib-9.5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "postgresql-doc-9.5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "postgresql-plperl-9.5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "postgresql-plpython-9.5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "postgresql-plpython3-9.5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "postgresql-pltcl-9.5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        },
        {
            "binary_name": "postgresql-server-dev-9.5",
            "binary_version": "9.5.25-0ubuntu0.16.04.1+esm10"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6638.json"
Ubuntu:Pro:18.04:LTS
postgresql-10

Package

Name
postgresql-10
Purl
pkg:deb/ubuntu/postgresql-10?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

10.*
10.1-1
10.1-2
10.2-1
10.3-1
10.4-0ubuntu0.18.04
10.5-0ubuntu0.18.04
10.6-0ubuntu0.18.04.1
10.7-0ubuntu0.18.04.1
10.8-0ubuntu0.18.04.1
10.9-0ubuntu0.18.04.1
10.10-0ubuntu0.18.04.1
10.12-0ubuntu0.18.04.1
10.14-0ubuntu0.18.04.1
10.15-0ubuntu0.18.04.1
10.16-0ubuntu0.18.04.1
10.17-0ubuntu0.18.04.1
10.18-0ubuntu0.18.04.1
10.19-0ubuntu0.18.04.1
10.20-0ubuntu0.18.04.1
10.21-0ubuntu0.18.04.1
10.22-0ubuntu0.18.04.1
10.23-0ubuntu0.18.04.1
10.23-0ubuntu0.18.04.2
10.23-0ubuntu0.18.04.2+esm1
10.23-0ubuntu0.18.04.2+esm2
10.23-0ubuntu0.18.04.2+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "postgresql-10",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "postgresql-client-10",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "postgresql-doc-10",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "postgresql-plperl-10",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "postgresql-plpython-10",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "postgresql-plpython3-10",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "postgresql-pltcl-10",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        },
        {
            "binary_name": "postgresql-server-dev-10",
            "binary_version": "10.23-0ubuntu0.18.04.2+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6638.json"