CVE-2026-61821

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.

CVSS v3 8.5 HIGH

8.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/pgpartman/pg_partman/commit/ba9405542acf24dd881845b935cab8b165854361
https://github.com/pgpartman/pg_partman/releases/tag/v5.5.0
https://github.com/pgpartman/pg_partman/security/advisories/GHSA-pxp2-x8cf-rfhc

Configurations

No configuration.

History

18 Sep 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-18 20:17

Updated : 2026-09-24 21:22

NVD link : CVE-2026-61821

Mitre link : CVE-2026-61821

CVE.ORG link : CVE-2026-61821

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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