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AlmaLinux 9 : postgresql:18 (ALSA-2026:67848)

high Nessus Plugin ID 346903

Synopsis

The remote AlmaLinux host is missing one or more security updates.

Description

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:67848 advisory.

 * postgresql: PostgreSQL: SQL injection in pg_createsubscriber allows arbitrary SQL execution as superuser (CVE-2026-6476)
 * postgresql: PostgreSQL: Arbitrary code execution via integer wraparound in tsvector and tsquery functions (CVE-2026-14662)
 * postgresql: PostgreSQL: Arbitrary code execution via untrusted data inclusion in pg_dump (CVE-2026-18408)
 * postgresql: PostgreSQL psql: Arbitrary command execution via untrusted data in COPY FROM STDIN (CVE-2026-6464)
 * postgresql: PostgreSQL: Arbitrary code execution via logical decoding plugin (CVE-2026-6471)
 * postgresql: PostgreSQL: Arbitrary code execution via type confusion with internal arguments (CVE-2026-14680)
 * postgresql: PostgreSQL: Arbitrary code execution via heap buffer overflow in regexp (CVE-2026-14664)
 * postgresql: pltcl: plperl: PostgreSQL: Arbitrary code execution in 32-bit pltcl and plperl (CVE-2026-14677)
 * postgresql-fuzzystrmatch: PostgreSQL fuzzystrmatch: Arbitrary code execution via integer wraparound (CVE-2026-15742)
 * postgresql: PostgreSQL: Arbitrary code execution via type confusion in cursor lifecycle (CVE-2026-16239)
 * postgresql: PostgreSQL: Arbitrary code execution via long POSIX timezone abbreviation (CVE-2026-14669)
 * postgresql: PostgreSQL: Arbitrary code execution via type confusion in pg_restore_attribute_stats() (CVE-2026-16238)
 * postgresql: PostgreSQL: Stack buffer overflow via OUT parameter count manipulation (CVE-2026-14679)
 * postgresql: PostgreSQL: Arbitrary code execution via type confusion in 'refint' module (CVE-2026-14671)
 * postgresql: PostgreSQL pg_stat_statements: Arbitrary code execution via heap buffer overflow (CVE-2026-14676)
 * postgresql: PostgreSQL: Arbitrary code execution via plperl tied hash heap buffer overflow (CVE-2026-14670)
 * postgresql: PostgreSQL: Information disclosure via type confusion in ctid selectivity estimator (CVE-2026-14668)
 * postgresql: PostgreSQL pg_dump: Arbitrary code execution via crafted transform lists (CVE-2026-19385)
 * postgresql: PostgreSQL: Privilege escalation via SQL injection in EXTRACT() deparse (CVE-2026-15741)
 * postgis: PostGIS: Memory Disclosure and Denial of Service via Malformed FlatGeobuf Buffer (CVE-2026-73515)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

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.

See Also

https://access.redhat.com/errata/RHSA-2026:67848

https://errata.almalinux.org/9/ALSA-2026-67848.html

Plugin Details

Severity: High

ID: 346903

File Name: alma_linux_ALSA-2026-67848.nasl

Version: 1.1

Type: Local

Published: 9/17/2026

Updated: 9/17/2026

Supported Sensors: Nessus Agent, Continuous Assessment, 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

CVSS v4

Risk Factor: High

Base Score: 7.2

Threat Score: 5.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-73515

Vulnerability Information

CPE: cpe:/o:alma:linux:9, cpe:/o:alma:linux:9::appstream, cpe:/o:alma:linux:9::baseos, cpe:/o:alma:linux:9::crb, cpe:/o:alma:linux:9::highavailability, cpe:/o:alma:linux:9::nfv, cpe:/o:alma:linux:9::realtime, cpe:/o:alma:linux:9::resilientstorage, cpe:/o:alma:linux:9::sap, cpe:/o:alma:linux:9::sap_hana, cpe:/o:alma:linux:9::supplementary, p-cpe:/a:alma:linux:pg_repack, p-cpe:/a:alma:linux:pgaudit, p-cpe:/a:alma:linux:pgvector, p-cpe:/a:alma:linux:postgis-client, p-cpe:/a:alma:linux:postgis-docs, p-cpe:/a:alma:linux:postgis-upgrade, p-cpe:/a:alma:linux:postgis-utils, p-cpe:/a:alma:linux:postgis, p-cpe:/a:alma:linux:postgres-decoderbufs, p-cpe:/a:alma:linux:postgresql-contrib, p-cpe:/a:alma:linux:postgresql-docs, p-cpe:/a:alma:linux:postgresql-plperl, p-cpe:/a:alma:linux:postgresql-plpython3, p-cpe:/a:alma:linux:postgresql-pltcl, p-cpe:/a:alma:linux:postgresql-private-devel, p-cpe:/a:alma:linux:postgresql-private-libs, p-cpe:/a:alma:linux:postgresql-server-devel, p-cpe:/a:alma:linux:postgresql-server, p-cpe:/a:alma:linux:postgresql-static, p-cpe:/a:alma:linux:postgresql-test-rpm-macros, p-cpe:/a:alma:linux:postgresql-test, p-cpe:/a:alma:linux:postgresql-upgrade-devel, p-cpe:/a:alma:linux:postgresql-upgrade, p-cpe:/a:alma:linux:postgresql

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/16/2026

Vulnerability Publication Date: 5/14/2026

Reference Information

CVE: CVE-2026-14662, CVE-2026-14664, CVE-2026-14668, CVE-2026-14669, CVE-2026-14670, CVE-2026-14671, CVE-2026-14676, CVE-2026-14677, CVE-2026-14679, CVE-2026-14680, CVE-2026-15741, CVE-2026-15742, CVE-2026-16238, CVE-2026-16239, CVE-2026-18408, CVE-2026-19385, CVE-2026-6464, CVE-2026-6471, CVE-2026-6476, CVE-2026-73515

CWE: 121, 122, 125, 190, 787, 805, 829, 843, 89, 94

RHSA: 2026:67848