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PostgreSQL patches 12-year-old code execution vulnerability

PostgreSQL has released security updates to fix a vulnerability present since 2014 that lets users with the REPLICATION attribute execute arbitrary code as the system user running the database. The flaw, CVE-2026-6471, affects multiple versions prior to the latest releases. The update introduces a whitelist restricting which logical decoding output plugins can be loaded, strengthening security for affected systems.

Why it mattersThe vulnerability exposes database servers to potential takeover if a replication user is compromised. Organizations using logical decoding for backups or data monitoring should apply the update to avoid a major security risk.

Sources covering this

SecurityWeekHeadline only12-Year-Old PostgreSQL Vulnerability Enables Database, Server Takeover12:06 PMThe Hacker NewsPostgreSQL Fixes 12-Year-Old Logical Decoding Flaw Enabling Replication-Role Code Execution3:20 PM

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