Vulnerability intelligence
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.
CVSS Score
7.2
High
EPSS — Exploit Probability
0.5%
Riskier than 43% of all CVEs · checked 2026-10-12
Exploitation
Not in CISA KEV
KEV does not include every exploited vulnerability
Remediation
Patch available
Vendor fix published
3 articles across 3 outlets · first covered Sep 4, 2026 · latest Sep 4, 2026
Coverage timeline
-
PostgreSQL Fixes 12-Year-Old Flaw Allowing Replication Takeoverthehackernews.com · Sep 4, 2026
-
PostGREShell Flaw Lets PostgreSQL Replication Accounts Hijack Serverssecurityaffairs.com · Sep 4, 2026
-
PostgreSQL Flaw Lets Low Privilege Users Plant Persistent Backdoorswww.securityweek.com · Sep 4, 2026