PostgreSQL Logical Decoding Vulnerability Affecting Multiple Versions
CVE-2026-6471

7.2HIGH

Key Information:

Vendor

PostgreSQL
Status
Postgresql
Vendor
CVE Published:
13 August 2026

What is CVE-2026-6471?

A security vulnerability exists in PostgreSQL's logical decoding feature, where a non-superuser with REPLICATION privileges can exploit missing authorization. This flaw enables the execution of arbitrary code by allowing access to any file that is visible to the operating system account running the PostgreSQL server through a selectively chosen logical decoding plugin. The vulnerability impacts multiple versions of PostgreSQL, necessitating immediate attention and remediation through updates.

Affected Version(s)

PostgreSQL 18 < 18.5

PostgreSQL 17 < 17.11

PostgreSQL 16 < 16.15

References

https://www.postgresql.org/support/security/CVE-2026-6471/

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

The PostgreSQL project thanks Vladimir Tokarev and Yu Kunpeng for reporting this problem.
.