---
id: CVE-2026-61821
title: >-
  pg_partman is a PostgreSQL extension that manages partitioned tables by time
  or ID
summary: >-
  pg_partman is a PostgreSQL extension that manages partitioned tables by time
  or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use
  part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and
  accept any no…
severity: high
cvss: 8.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N'
cwe:
  - CWE-862
vendor: pgpartman
product: pg_partman
affected:
  - pg_partman < 5.5.0
published: '2026-09-18'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:22:19.873'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-61821'
references:
  - url: >-
      https://github.com/pgpartman/pg_partman/commit/ba9405542acf24dd881845b935cab8b165854361
    label: security-advisories@github.com
  - url: 'https://github.com/pgpartman/pg_partman/releases/tag/v5.5.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/pgpartman/pg_partman/security/advisories/GHSA-pxp2-x8cf-rfhc
    label: security-advisories@github.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-61821.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-61821'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-61821'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00379
epssPercentile: 0.29136
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-19T13:37:30.159508Z'
ingestedAt: '2026-09-18T20:51:25.677Z'
---

## Overview

pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-61821.json)