---
id: CVE-2026-103484
title: >-
  IVFFlat index build in pgvector before 0.8.7 allows a database user to write
  data out-of-bounds, which can lead to arbitrary code execution.
summary: >-
  IVFFlat index build in pgvector before 0.8.7 allows a database user to write
  data out-of-bounds, which can lead to arbitrary code execution.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
  - CWE-1284
product: pgvector
affected:
  - pgvector < 0.8.7
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T20:17:23.213'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103484'
references:
  - url: >-
      https://github.com/pgvector/pgvector/commit/ee00d39ab30c2a7cf9510abf9288c624d91db156
    label: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
  - url: 'https://github.com/pgvector/pgvector/issues/1036'
    label: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-01T19:58:32.132643Z'
ingestedAt: '2026-10-01T19:58:57.559Z'
---

## Overview

IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds, which can lead to arbitrary code execution.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.