CVE-2026-6473

Severity CVSS v4.0:

Pending analysis

Type:

CWE-190 Integer Overflow or Wraparound

Publication date:

14/05/2026

Last modified:

06/07/2026

Description

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

8.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:postgresql:postgresql::::::::		14.23 (excluding)
cpe:2.3:a:postgresql:postgresql::::::::	15.0 (including)	15.18 (excluding)
cpe:2.3:a:postgresql:postgresql::::::::	16.0 (including)	16.14 (excluding)
cpe:2.3:a:postgresql:postgresql::::::::	17.0 (including)	17.10 (excluding)
cpe:2.3:a:postgresql:postgresql::::::::	18.0 (including)	18.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-6473

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools