---
id: CVE-2026-6470
title: >-
  Missing authorization in PostgreSQL DDL commands allows an object creator to
  achieve denial of service against ALTER and DROP of the type, via creating a
  dependency on the type
summary: >-
  Missing authorization in PostgreSQL DDL commands allows an object creator to
  achieve denial of service against ALTER and DROP of the type, via creating a
  dependency on the type.  Many DDL operations did check the privilege, but
  assigning…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-862
vendor: postgresql
product: postgresql
affected:
  - 'postgresql >= 14.0, < 14.24'
  - 'postgresql >= 15.0, < 15.19'
  - 'postgresql >= 16.0, < 16.15'
  - 'postgresql >= 17.0, < 17.11'
  - '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-2026-6470'
references:
  - url: 'https://www.postgresql.org/support/security/CVE-2026-6470/'
    label: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
tags:
  - nvd
epss: 0.00195
epssPercentile: 0.09469
ingestedAt: '2026-08-29T23:43:54.177Z'
---

## Overview

Missing authorization in PostgreSQL DDL commands allows an object creator to achieve denial of service against ALTER and DROP of the type, via creating a dependency on the type.  Many DDL operations did check the privilege, but assigning a range subtype and referencing the type from an SQL expression did not.  Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

## Affected

- `postgresql >= 14.0, < 14.24`
- `postgresql >= 15.0, < 15.19`
- `postgresql >= 16.0, < 16.15`
- `postgresql >= 17.0, < 17.11`
- `postgresql >= 18.0, < 18.5`

## Remediation

Upgrade past the affected range:

- `postgresql 18.5`