CVE-2026-9617

PostgreSQL Anonymizer: malicious column name allows SQL injection via anon.k_anonymity() function

Published May 27, 2026 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
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

Remediation

Vendor Workaround

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

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Dalibo anonymizer
CPEs cpe:2.3:a:dalibo:anonymizer:2.5.1:*:*:*:*:postgresql:*:*
Vendors & Products Dalibo anonymizer
Type Values Removed Values Added
First Time appeared Dalibo
Dalibo postgresql Anonymizer
Vendors & Products Dalibo
Dalibo postgresql Anonymizer
Type Values Removed Values Added
Metrics ssvc

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

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
PostgreSQL
Published
Updated
May 28, 2026, 3:55 AM
Reserved
May 26, 2026, 4:36 PM
Status
Analyzed
Published
May 27, 2026, 2:17 PM
Modified
Oct 26, 2026, 11:10 AM