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The disclosed CVE-2026-6471 (PostGREShell) represents a critical infrastructure risk for AI and data engineering workloads that rely heavily on PostgreSQL for model training data storage or vector database operations. By exploiting the logical decoding feature, attackers can execute arbitrary code with server-level privileges using only low-level replication accounts, potentially compromising the integrity of sensitive datasets used in machine learning pipelines. Organizations must immediately patch affected versions and review permissions on non-superuser replication accounts to prevent unauthorized code execution on database servers.

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12-Year-Old PostgreSQL Flaw Lets Attackers Execute Code on Database Servers

Cybersecurity NewsSeptember 7, 20263 min read

A newly disclosed PostgreSQL vulnerability, tracked as CVE-2026-6471 and nicknamed PostGREShell, could allow attackers with low-level replication access to execute arbitrary code on database servers. The flaw in PostgreSQL logical decoding existed for roughly 12 years and has now been fixed in supported releases. PostgreSQL is widely used to store business data, application records, customer […] The post 12-Year-Old PostgreSQL Flaw Lets Attackers Execute Code on Database Servers appeared first on Cyber Security News.

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