PT-2026-40918 · Postgresql Global Development Group+3 · Postgresql+2

A1Ex + 7 · Published 2026-05-14 · Updated 2026-05-22 · CVE-2026-6473

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions PostgreSQL versions prior to 18.4 PostgreSQL versions prior to 17.10 PostgreSQL versions prior to 16.14 PostgreSQL versions prior to 15.18 PostgreSQL versions prior to 14.23

Description Integer wraparound in multiple server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This can lead to arbitrary code execution as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the input provider may cause a segmentation fault, which is an error occurring when a program attempts to access a memory location that it is not allowed to access.

Recommendations Update to version 18.4 or later. Update to version 17.10 or later. Update to version 16.14 or later. Update to version 15.18 or later. Update to version 14.23 or later.

Fix

DoS

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

BDU:2026-07102

BIT-POSTGRESQL-2026-6473

CVE-2026-6473

ECHO-A6F1-A1C7-A609

OESA-2026-2381

OESA-2026-2382

OESA-2026-2413

OESA-2026-2414

OPENSUSE-SU-2026:10806-1

OPENSUSE-SU-2026:10807-1

OPENSUSE-SU-2026:10808-1

OPENSUSE-SU-2026:10809-1

OPENSUSE-SU-2026:10828-1

USN-8294-1

Affected Products

Linuxmint

Postgresql

Ubuntu

References · 69

• https://ubuntu.com/security/CVE-2026-6479 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6474 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-6473 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-6473 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6479 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10828-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10808-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-6473 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6478 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6473 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6472 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-6473 · Security Note
• https://postgresql.org/support/security/CVE-2026-6473 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10807-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-6475 · Vendor Advisory