Detections
Analytics

PostgreSQL 14.x < 14.24 / 15.x < 15.19 / 16.x < 16.15 / 17.x < 17.11 / 18.x < 18.6 Multiple Vulnerabilities

high Nessus Plugin ID 342120

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Synopsis

The remote database server is affected by multiple vulnerabilities.

Description

The version of PostgreSQL installed on the remote host is 14 prior to 14.24, 15 prior to 15.19, 16 prior to 16.15, 17 prior to 17.11, or 18 prior to 18.6. As such, it is potentially affected by multiple vulnerabilities:

 - Type confusion with PostgreSQL 'internal' data type arguments allows any user to execute arbitrary code as the operating system user running the database, via calls to functions with that argument type. Type 'internal' represents a class of mutually-incompatible data structures not intended for access from SQL.
 The system intended to prevent such function calls, but this prevention had gaps. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected. (CVE-2026-14680)

 - Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs. This may execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected. (CVE-2026-14662)

 - Heap buffer overflow in PostgreSQL regexp allows the query author to execute arbitrary code as the operating system user running the database, via text that would not pass encoding validation. This shares heritage with CVE-2026-2006, but this case involved unanticipated data growth when round-tripped through pg_wchar. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected. (CVE-2026-14664)

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 14.24 / 15.19 / 16.15 / 17.11 / 18.6 or later.

See Also

https://www.postgresql.org/support/security/

Plugin Details

Severity: High

ID: 342120

File Name: postgresql_20260813.nasl

Version: 1.2

Type: Combined

Agent: windows, macosx, unix

Family: Databases

Published: 9/1/2026

Updated: 9/2/2026

Configuration: Enable thorough checks (optional)

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

Risk Information

VPR

Risk Factor: High

Score: 7.9

Percentile: 99.36

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-18408

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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:P/RL:O/RC:C

CVSS Score Source: CVE-2026-19385

Vulnerability Information

CPE: cpe:/a:postgresql:postgresql

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/13/2026

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-14662, CVE-2026-14663, CVE-2026-14664, CVE-2026-14666, CVE-2026-14668, CVE-2026-14669, CVE-2026-14670, CVE-2026-14671, CVE-2026-14677, CVE-2026-14678, CVE-2026-14679, CVE-2026-14680, CVE-2026-15741, CVE-2026-15742, CVE-2026-16239, CVE-2026-16241, CVE-2026-18024, CVE-2026-18408, CVE-2026-19385, CVE-2026-6464, CVE-2026-6469, CVE-2026-6470, CVE-2026-6471

IAVB: 2026-B-0238