CVE-2026-18022

pgvector: pgvector: Arbitrary Code Execution via Integer Wraparound

Loading…

Severity

Important

Red Hat Product Security

8.8

CVSS 3.1

Review impact separately from score.

Published · July 30, 2026

Updated · October 15, 2026

Description

A flaw was found in pgvector. An integer wraparound vulnerability exists during the IVFFlat index build process. This flaw allows a database user on a 32-bit system to write data outside of allocated memory buffers. Successful exploitation could lead to arbitrary code execution.

Statement

Only 32-bit systems are affected. Affected products support 64-bit systems only.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-787 · Out-of-bounds Write