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Linux Distros Unpatched Vulnerability : CVE-2026-14666

medium Nessus Plugin ID 335229

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse. Stale policies continue until some other event invalidates the cache or connection termination ends the session. This permits a user to complete reads and modifications that were recently permitted but now forbidden. An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected. (CVE-2026-14666)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-14666

https://ubuntu.com/security/CVE-2026-14666

Plugin Details

Severity: Medium

ID: 335229

File Name: unpatched_CVE_2026_14666.nasl

Version: 1.15

Type: Local

Agent: unix

Family: Misc.

Published: 8/13/2026

Updated: 9/22/2026

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.96

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 3.1

Vector: CVSS2#AV:N/AC:H/Au:S/C:P/I:P/A:N

CVSS Score Source: CVE-2026-14666

CVSS v3

Risk Factor: Medium

Base Score: 4.2

Temporal Score: 3.9

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:postgresql-10, p-cpe:/a:canonical:ubuntu_linux:postgresql-12, p-cpe:/a:canonical:ubuntu_linux:postgresql-9.3, p-cpe:/a:canonical:ubuntu_linux:postgresql-9.5, p-cpe:/a:centos:centos:pg_repack, p-cpe:/a:centos:centos:pgaudit, p-cpe:/a:centos:centos:postgres-decoderbufs, p-cpe:/a:centos:centos:postgresql-contrib, p-cpe:/a:centos:centos:postgresql-docs, p-cpe:/a:centos:centos:postgresql-plperl, p-cpe:/a:centos:centos:postgresql-plpython3, p-cpe:/a:centos:centos:postgresql-pltcl, p-cpe:/a:centos:centos:postgresql-private-devel, p-cpe:/a:centos:centos:postgresql-private-libs, p-cpe:/a:centos:centos:postgresql-server-devel, p-cpe:/a:centos:centos:postgresql-server, p-cpe:/a:centos:centos:postgresql-static, p-cpe:/a:centos:centos:postgresql-test-rpm-macros, p-cpe:/a:centos:centos:postgresql-test, p-cpe:/a:centos:centos:postgresql-upgrade-devel, p-cpe:/a:centos:centos:postgresql-upgrade, p-cpe:/a:centos:centos:postgresql16, p-cpe:/a:centos:centos:postgresql18-contrib, p-cpe:/a:centos:centos:postgresql18-docs, p-cpe:/a:centos:centos:postgresql18-plperl, p-cpe:/a:centos:centos:postgresql18-plpython3, p-cpe:/a:centos:centos:postgresql18-private-devel, p-cpe:/a:centos:centos:postgresql18-private-libs, p-cpe:/a:centos:centos:postgresql18-server-devel, p-cpe:/a:centos:centos:postgresql18-server, p-cpe:/a:centos:centos:postgresql18-static, p-cpe:/a:centos:centos:postgresql18-test-rpm-macros, p-cpe:/a:centos:centos:postgresql18-test, p-cpe:/a:centos:centos:postgresql18-upgrade-devel, p-cpe:/a:centos:centos:postgresql18-upgrade, p-cpe:/a:centos:centos:postgresql18, p-cpe:/a:centos:centos:postgresql, p-cpe:/a:redhat:enterprise_linux:pg_repack, p-cpe:/a:redhat:enterprise_linux:pgaudit, p-cpe:/a:redhat:enterprise_linux:postgres-decoderbufs, p-cpe:/a:redhat:enterprise_linux:postgresql-contrib, p-cpe:/a:redhat:enterprise_linux:postgresql-docs, p-cpe:/a:redhat:enterprise_linux:postgresql-plperl, p-cpe:/a:redhat:enterprise_linux:postgresql-plpython3, p-cpe:/a:redhat:enterprise_linux:postgresql-pltcl, p-cpe:/a:redhat:enterprise_linux:postgresql-private-devel, p-cpe:/a:redhat:enterprise_linux:postgresql-private-libs, p-cpe:/a:redhat:enterprise_linux:postgresql-server-devel, p-cpe:/a:redhat:enterprise_linux:postgresql-server, p-cpe:/a:redhat:enterprise_linux:postgresql-static, p-cpe:/a:redhat:enterprise_linux:postgresql-test-rpm-macros, p-cpe:/a:redhat:enterprise_linux:postgresql-test, p-cpe:/a:redhat:enterprise_linux:postgresql-upgrade-devel, p-cpe:/a:redhat:enterprise_linux:postgresql-upgrade, p-cpe:/a:redhat:enterprise_linux:postgresql16, p-cpe:/a:redhat:enterprise_linux:postgresql18-contrib, p-cpe:/a:redhat:enterprise_linux:postgresql18-docs, p-cpe:/a:redhat:enterprise_linux:postgresql18-plperl, p-cpe:/a:redhat:enterprise_linux:postgresql18-plpython3, p-cpe:/a:redhat:enterprise_linux:postgresql18-private-devel, p-cpe:/a:redhat:enterprise_linux:postgresql18-private-libs, p-cpe:/a:redhat:enterprise_linux:postgresql18-server-devel, p-cpe:/a:redhat:enterprise_linux:postgresql18-server, p-cpe:/a:redhat:enterprise_linux:postgresql18-static, p-cpe:/a:redhat:enterprise_linux:postgresql18-test-rpm-macros, p-cpe:/a:redhat:enterprise_linux:postgresql18-test, p-cpe:/a:redhat:enterprise_linux:postgresql18-upgrade-devel, p-cpe:/a:redhat:enterprise_linux:postgresql18-upgrade, p-cpe:/a:redhat:enterprise_linux:postgresql18, p-cpe:/a:redhat:enterprise_linux:postgresql

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-14666