SecuriTricks - CVE-2026-6479

Description

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.

Product(s) Impacted

Vendor	Product	Versions
Postgresql	Postgresql	<14.23, <15.18, <16.14, <17.10, <18.4

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-674

Uncontrolled Recursion

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	postgresql	postgresql	<14.23	/	/	/	/	/	/	/
a	postgresql	postgresql	<15.18	/	/	/	/	/	/	/
a	postgresql	postgresql	<16.14	/	/	/	/	/	/	/
a	postgresql	postgresql	<17.10	/	/	/	/	/	/	/
a	postgresql	postgresql	<18.4	/	/	/	/	/	/	/

References

https://www.postgresql.org/support/security/CVE-2026-6479/

CVSS Score

7.5 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: UNCHANGED
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: HIGH

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

View Vector String

Timeline

Published: May 14, 2026, 2:16 p.m.
Last Modified: May 14, 2026, 4:21 p.m.

Status : Undergoing Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

CVE-2026-6479