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 plugin-loading path exposed for roughly 12 years. Cyera Research disclosed the issue on […]
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