CentOS Linux 7 [TuxCare] Security Update: postgresql / postgresql-contrib / postgresql-devel / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1793088226)

high Nessus Plugin ID 374128

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Synopsis

The CentOS Linux host is missing one or more security updates.

Description

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1793088226 advisory.

- 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. These types are typically sourced from application logic, not taken from the application's user. Hence, application users attacking the database, through the application as a conduit, are unlikely. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
(CVE-2026-14662)

- Heap buffer overflow in PostgreSQL plperl return of a tied hash allows the function owner to execute arbitrary code as the operating system user running the database, via a crafted function body. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected. (CVE-2026-14670)

- Type confusion in PostgreSQL module refint allows an object creator to execute arbitrary code as the operating system user running the database. The fix for this emerged as a non-security bug report, and the fix appear in the git repository with subject refint: Remove plan cache., without a CVE number. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected. (CVE-2026-14671)

- Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies. This may execute arbitrary code as the operating system user running the database. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected. (CVE-2026-14677)

- 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)

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

Solution

Update the affected packages based on the guidance in TuxCare advisory CENTOS7:CLSA-2026:1793088226.

Plugin Details

Severity: High

ID: 374128

File Name: tuxcare_centos_7_CLSA-2026-1793088226.nasl

Version: 1.1

Type: Local

Agent: unix

Family: CentOS Local Security Checks

Published: 10/30/2026

Updated: 10/30/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 99.02

Vendor

Vendor Severity: Important

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-2026-2005

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/OS/extended-third-party

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/27/2026

Vulnerability Publication Date: 2/12/2026

Reference Information

CVE: CVE-2026-14662, CVE-2026-14670, CVE-2026-14671, CVE-2026-14677, CVE-2026-14680, CVE-2026-15742, CVE-2026-16239, CVE-2026-18408, CVE-2026-2005

CLSA: 2026:1793088226

Detections

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