Integer wraparound in IVFFlat index build in pgvector before 0.8.6 allows a database user to write data out-of-bounds, which could lead to arbitrary code execution. Only 32-bit systems are affected.
History

Thu, 30 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Wed, 29 Jul 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Pgvector
Pgvector pgvector
Vendors & Products Pgvector
Pgvector pgvector

Wed, 29 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 29 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Description Integer wraparound in IVFFlat index build in pgvector before 0.8.6 allows a database user to write data out-of-bounds, which could lead to arbitrary code execution. Only 32-bit systems are affected.
Title pgvector buffer overflow via integer wraparound in IVFFlat index build on 32-bit systems
Weaknesses CWE-190
CWE-787
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: PostgreSQL

Published: 2026-07-29T18:55:54.658Z

Updated: 2026-07-31T03:56:13.731Z

Reserved: 2026-07-28T00:20:11.430Z

Link: CVE-2026-18022

cve-icon Vulnrichment

Updated: 2026-07-29T19:31:00.569Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-07-29T18:55:54Z

Links: CVE-2026-18022 - Bugzilla