SQL injection in PostgreSQL - CVE-2026-6476
Published: May 14, 2026
Vulnerability identifier: #VU131458
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-6476
CWE-ID: CWE-89
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PostgreSQL Global Development Group
Affected software:
PostgreSQL
PostgreSQL
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary SQL as a superuser.
The vulnerability exists due to SQL injection in pg_createsubscriber when processing a subscription name. A remote privileged user can supply a crafted subscription name to execute arbitrary SQL as a superuser.
The attack takes effect when pg_createsubscriber next runs.
How to mitigate CVE-2026-6476
Install security update from vendor's website.