---
id: CVE-2026-14676
title: >-
  Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author
  to execute arbitrary code as the operating system user running the database,
  via crafted queries containing array constants
summary: >-
  Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author
  to execute arbitrary code as the operating system user running the database,
  via crafted queries containing array constants.  Within major version 18,
  minor ve…
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-122
  - CWE-787
vendor: postgresql
product: postgresql
affected:
  - 'postgresql >= 18.0, < 18.5'
patched:
  - postgresql 18.5
published: '2026-08-13'
updated: '2026-08-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14676'
references:
  - url: 'https://www.postgresql.org/support/security/CVE-2026-14676/'
    label: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-14676.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-14676'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2515324'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-14676'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14676'
  - url: 'https://access.redhat.com/errata/RHSA-2026:67280'
  - url: 'https://access.redhat.com/errata/RHSA-2026:67848'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
epss: 0.00436
epssPercentile: 0.35221
ingestedAt: '2026-08-29T23:43:53.334Z'
---

## Overview

Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants.  Within major version 18, minor versions before PostgreSQL 18.6 are affected.  Versions before PostgreSQL 18 are unaffected.

## Affected

- `postgresql >= 18.0, < 18.5`

## Remediation

Upgrade past the affected range:

- `postgresql 18.5`

## Vendor advisories

- **RHSA-2026:67280** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-09-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:67280)
- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 9 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-14676.json)
- **RHSA-2026:67848** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:67848)