Detections
Analytics

PostgreSQL 18.x < 18.6 Multiple Vulnerabilities

high Nessus Plugin ID 342124

Synopsis

The remote database server is affected by multiple vulnerabilities.

Description

The version of PostgreSQL installed on the remote host is 18 prior to 18.6. As such, it is potentially affected by multiple vulnerabilities:

 - Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants. Within major version 18, minor versions before PostgreSQL 18.6 are affected. Versions before PostgreSQL 18 are unaffected. (CVE-2026-14676)

 - Type confusion in PostgreSQL pg_restore_attribute_stats() allows an object creator to execute arbitrary code as the operating system user running the database, via conflation of range and multirange values. Within major version 18, minor versions before PostgreSQL 18.6 are affected. Versions before PostgreSQL 18 are unaffected. (CVE-2026-16238)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to PostgreSQL 18.6 or later.

See Also

https://www.postgresql.org/support/security/CVE-2026-14676

https://www.postgresql.org/support/security/CVE-2026-16238

Plugin Details

Severity: High

ID: 342124

File Name: postgresql_20260813_4.nasl

Version: 1.1

Type: Combined

Agent: windows, macosx, unix

Family: Databases

Published: 9/1/2026

Updated: 9/1/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.15

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-14676

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

CVSS Score Source: CVE-2026-14676

Vulnerability Information

CPE: cpe:/a:postgresql:postgresql

Exploit Ease: No known exploits are available

Patch Publication Date: 8/13/2026

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-14676, CVE-2026-16238

IAVB: 2026-B-0238