SQL injection in PostgreSQL - CVE-2026-120153
Published: November 12, 2026
Vulnerability identifier: #VU166088
CSH Severity: Low
CVSS v4: 8.6 [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]
CVE-ID: CVE-2026-120153
CWE-ID: CWE-89
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote privileged user to execute arbitrary code as the bootstrap superuser.
The vulnerability exists due to improper neutralization of SQL syntax in PostgreSQL extension-script substitutions when incorporating schema or owner names into extension scripts. A remote privileged user can use database-level CREATE privilege to supply a schema or owner name containing newlines or other special substrings to inject SQL and execute arbitrary code as the bootstrap superuser.
Exploitation requires a non-bundled extension with a vulnerable script pattern.
Affected software
PostgreSQL
How to mitigate CVE-2026-120153
Install security update from vendor's website.
PostgreSQL - addressed in versions 14.25, 15.20, 16.16, 17.12, 18.7