CVE-2026-6473

CVE Details

Release Date:	2026-05-14
Impact:	Important	What is this?

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.

See more information about CVE-2026-6473 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	8.8
Vector String:	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.1
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (pg_repack)	ELSA-2026-26181	2026-06-19
Oracle Linux version 8 (pgaudit)	ELSA-2026-26181	2026-06-19
Oracle Linux version 8 (postgres-decoderbufs)	ELSA-2026-26181	2026-06-19
Oracle Linux version 8 (postgresql)	ELSA-2026-26181	2026-06-19