CVE-2026-6473

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.postgresql.org/support/security/CVE-2026-6473/	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:postgresql:postgresql::::::::
	cpe:2.3:a:postgresql:postgresql::::::::
	cpe:2.3:a:postgresql:postgresql::::::::
	cpe:2.3:a:postgresql:postgresql::::::::
	cpe:2.3:a:postgresql:postgresql::::::::

History

18 May 2026, 14:59

Type	Values Removed	Values Added
References	~~() https://www.postgresql.org/support/security/CVE-2026-6473/ -~~	() https://www.postgresql.org/support/security/CVE-2026-6473/ - Patch, Vendor Advisory
First Time		Postgresql Postgresql postgresql
CPE		cpe:2.3:a:postgresql:postgresql::::::::

14 May 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-14 14:16

Updated : 2026-05-18 14:59

NVD link : CVE-2026-6473

Mitre link : CVE-2026-6473

CVE.ORG link : CVE-2026-6473

JSON object : View

Products Affected

postgresql

postgresql

CWE

CWE-190

Integer Overflow or Wraparound

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