Published Aug 13, 2026Sources checked Oct 28, 2026
7.2HIGHCVSS out of 10
What this means
Review the available evidence
CVE-2026-6471 and is rated High severity with a CVSS score of 7.2. 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: Sep 25, 2026
Release Notes
CISA KEVNot listedBased on the latest collected catalog
EPSS0.5%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-6471?
Missing authorization in PostgreSQL logical decoding allows a non-superuser holding REPLICATION privilege to dlopen any file visible to the operating system account running the server, via the choice of logical decoding plugin. This in turn runs arbitrary code as that account.
Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.