Published Nov 12, 2026Sources checked Nov 12, 2026
4.3MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-120154 and is rated Medium severity with a CVSS score of 4.3. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
What to do next
Remediation and response
Microsoft Security Response Center guidance
Vendor revision: Nov 14, 2026
Release Notes
CISA KEVNot listedBased on the latest collected catalog
EPSSUnavailableNo current score collected
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-120154?
Improper protection in PostgreSQL INSERT ... ON CONFLICT allows an attacker having INSERT, UPDATE, and applicable SELECT privileges on the table to read every row despite row security policies, via iterated INSERT ...
ON CONFLICT DO UPDATE. Unlike CVE-2026-16237, this does not facilitate improper writes.
Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.