12-Year-Old PostgreSQL Flaw Lets Attackers Execute Code and Take Over Database Servers

A critical PostgreSQL vulnerability dubbed PostGREShell could allow low-privileged replication accounts to execute attacker-controlled code, escalate to database superuser, and establish persistent backdoors on affected servers. Tracked as CVE-2026-6471, the flaw reportedly affected PostgreSQL releases from version 9.4 onward, leaving a dangerous...