UBUNTU-CVE-2026-14672

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Source

https://ubuntu.com/security/CVE-2026-14672

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14672.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-14672

Upstream

CVE-2026-14672

Downstream

USN-8653-1

Related

USN-8653-1

Published

2026-08-13T13:17:00Z

Modified

2026-09-02T19:39:44Z

Severity

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

Summary

[none]

Details

Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count. This requires the probed user to have a non-default scram_iterations count, because the authentication challenge for a nonexistent user reports the default scram_iterations. Within major versions 16-18, minor versions before PostgreSQL 18.6, 17.11, and 16.15 are affected. Versions before PostgreSQL 16 are unaffected.

References

Affected packages

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

0 Unknown 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-2026-14672.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

0 Unknown introduced version / All previous versions are affected

Fixed

16.15-0ubuntu0.24.04.1

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

16.14-0ubuntu0.24.04.1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-16",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-client-16",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-doc-16",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-plperl-16",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-plpython3-16",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-pltcl-16",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "postgresql-server-dev-16",
            "binary_version": "16.15-0ubuntu0.24.04.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14672.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

0 Unknown introduced version / All previous versions are affected

Fixed

18.6-0ubuntu0.26.04.1

Affected versions

18.*

18.0-1

18.1-1

18.1-1ubuntu1

18.1-1ubuntu2

18.1-2

18.3-1

18.4-0ubuntu0.26.04.1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "libpq-oauth",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-18-jit",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-client-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-doc-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-plperl-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-plpython3-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-pltcl-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        },
        {
            "binary_name": "postgresql-server-dev-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14672.json"