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12-Year-Old PostgreSQL Vulnerability Enables Database, Server Takeover

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vulnerabilities

12-Year-Old PostgreSQL Vulnerability Enables Database, Server Takeover

CVE-2026-6471, a 12-year-old PostgreSQL vulnerability tracked as PostGREShell, allows attackers with low-level replication access to achieve remote code execution and gain persistent superuser privileges. The flaw enables complete database and server takeover through establishment of a durable backdoor.

Why it matters: PostgreSQL administrators and organizations running affected instances must audit replication access controls and apply patches immediately, as any account with replication privileges can compromise the entire database and underlying server.

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Correction

Correction recorded as of .

vulnerabilities

12-Year-Old PostgreSQL Vulnerability Enables Database, Server Takeover

CVE-2026-6471, a 12-year-old PostgreSQL vulnerability tracked as PostGREShell, allows attackers with low-level replication access to achieve remote code execution and gain persistent superuser privileges. The flaw enables complete database and server takeover through establishment of a durable backdoor.

Why it matters: PostgreSQL administrators and organizations running affected instances must audit replication access controls and apply patches immediately, as any account with replication privileges can compromise the entire database and underlying server.

Source published
First seen by Cybersecurity Tracker

Source attribution

Glossary