PT-2026-40924 · Postgresql Global Development Group+3 · Postgresql+2

Claude · Published 2026-05-14 · Updated 2026-05-22 · CVE-2026-6479

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

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 Uncontrolled recursion during SSL and GSS negotiation enables an attacker with access to a PostgreSQL AF UNIX socket to cause a sustained denial of service. Additionally, if both SSL and GSS are disabled, the same effect can be achieved via access to a PostgreSQL TCP socket.

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

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

BDU:2026-07096

BIT-POSTGRESQL-2026-6479

CVE-2026-6479

ECHO-C17A-46AB-75A9

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-2026-6476 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8294-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-6478 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6478 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6637 · Security Note
• https://osv.dev/vulnerability/BIT-postgresql-2026-6479 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-6638 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-6637 · Vendor Advisory
• https://postgresql.org/support/security/CVE-2026-6479 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10809-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10807-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-07096 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-6479 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6475 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10806-1 · Vendor Advisory