PostgreSQL Anonymizer contains a vulnerability that allows a user to gain superuser privileges by creating a table and placing malicious code inside a column identifier. If a superuser calls the k-anonymity function, the malicious code is executed with superuser privileges. The risk is higher with PostgreSQL 14 or with instances upgraded from PostgreSQL 14 or a prior version. With PostgreSQL 15 and later, the creation permission on the public schema is revoked by default and this exploit can only be achieved by a user who was explicitly granted the CREATE TABLE privilege. The problem is resolved in PostgreSQL Anonymizer 3.1.0 and further versions

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Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

Remove the k_anonymity feature with 'DROP FUNCTION anon.k_anonymity();'. This is a user-facing function with no internal dependencies.

History

Wed, 27 May 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 27 May 2026 14:15:00 +0000

Type Values Removed Values Added
Description PostgreSQL Anonymizer contains a vulnerability that allows a user to gain superuser privileges by creating a table and placing malicious code inside a column identifier. If a superuser calls the k-anonymity function, the malicious code is executed with superuser privileges. The risk is higher with PostgreSQL 14 or with instances upgraded from PostgreSQL 14 or a prior version. With PostgreSQL 15 and later, the creation permission on the public schema is revoked by default and this exploit can only be achieved by a user who was explicitly granted the CREATE TABLE privilege. The problem is resolved in PostgreSQL Anonymizer 3.1.0 and further versions
Title PostgreSQL Anonymizer: malicious column name allows SQL injection via anon.k_anonymity() function
Weaknesses CWE-89
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: PostgreSQL

Published:

Updated: 2026-05-27T15:27:45.957Z

Reserved: 2026-05-26T16:36:40.963Z

Link: CVE-2026-9617

cve-icon Vulnrichment

Updated: 2026-05-27T15:14:00.451Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-27T14:17:40.273

Modified: 2026-05-27T14:54:20.160

Link: CVE-2026-9617

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses