CVE-2026-6473: PostgreSQL server undersizes allocations, via integer wraparound

Overview

Severity

High (CVSS 8.8)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-05-16

EPSS Score

0.06% (percentile: 19.8%)

Affected Products (1)

Other

• 21340-17084

Revision History

• 2026-05-16: Information published.