CVE-2026-6471: Missing Authorization in PostgreSQL
CVE-2026-6471 is a high-severity vulnerability in PostgreSQL affecting versions prior to 18.6, 17.11, 16.15, 15.19, and 14.24. It involves missing authorization checks in the logical decoding feature, allowing a non-superuser with REPLICATION privilege to load arbitrary files via a logical decoding plugin. This can lead to arbitrary code execution with the operating system account privileges running the PostgreSQL server.
AI Analysis
Technical Summary
This vulnerability arises from missing authorization in PostgreSQL's logical decoding mechanism. A non-superuser holding the REPLICATION privilege can exploit this by choosing a logical decoding plugin that uses dlopen to load any file accessible by the OS account running the server. This results in arbitrary code execution under the server's OS user context. The issue affects PostgreSQL versions before 18.6, 17.11, 16.15, 15.19, and 14.24.
Potential Impact
Successful exploitation allows an attacker with REPLICATION privilege to execute arbitrary code as the operating system user running the PostgreSQL server. This compromises confidentiality, integrity, and availability of the database system and potentially the host system.
Mitigation Recommendations
A fix is available in PostgreSQL versions 18.6, 17.11, 16.15, 15.19, and 14.24 and later. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation guidance is provided in the input data.
CVE-2026-6471: Missing Authorization in PostgreSQL
Description
CVE-2026-6471 is a high-severity vulnerability in PostgreSQL affecting versions prior to 18.6, 17.11, 16.15, 15.19, and 14.24. It involves missing authorization checks in the logical decoding feature, allowing a non-superuser with REPLICATION privilege to load arbitrary files via a logical decoding plugin. This can lead to arbitrary code execution with the operating system account privileges running the PostgreSQL server.
CVSS v3.1
Score 7.2high
Affected software
PostgreSQL
pkg:deb/postgresql/postgresqlRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from missing authorization in PostgreSQL's logical decoding mechanism. A non-superuser holding the REPLICATION privilege can exploit this by choosing a logical decoding plugin that uses dlopen to load any file accessible by the OS account running the server. This results in arbitrary code execution under the server's OS user context. The issue affects PostgreSQL versions before 18.6, 17.11, 16.15, 15.19, and 14.24.
Potential Impact
Successful exploitation allows an attacker with REPLICATION privilege to execute arbitrary code as the operating system user running the PostgreSQL server. This compromises confidentiality, integrity, and availability of the database system and potentially the host system.
Mitigation Recommendations
A fix is available in PostgreSQL versions 18.6, 17.11, 16.15, 15.19, and 14.24 and later. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation guidance is provided in the input data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-04-17T00:22:33.190Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7dc61abf8831d5393e5470
Added to database: 08/13/2026, 13:26:50 UTC
Last enriched: 09/12/2026, 04:32:07 UTC
Last updated: 09/26/2026, 05:44:53 UTC
Views: 76
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