CVE-2026-6479 HIGH

CVE-2026-6479: PostgreSQL SSL/GSS init causes denial of service, via uncontrolled recursion

Vendor N/A
Product PostgreSQL
Weakness CWE-674
Published May 14, 2026
Last update May 14, 2026

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve sustained denial of service. If SSL and GSS are both disabled, an attacker can do the same via access to a PostgreSQL TCP socket. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Key dates

02Disclosure timeline

May 14, 2026 CVE published
May 14, 2026 Record updated