CVE-2026-120153

HIGH 7.2

PostgreSQL extension-script substitutions allow SQL injection through object names

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

0th

SQL injection in PostgreSQL extension-script substitutions allows an attacker with database-level CREATE privilege to execute arbitrary code as the bootstrap superuser, via a schema or owner name containing newlines or other special substrings. This is similar to CVE-2023-39417, but it requires a non-bundled extension with a vulnerable script pattern. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

CWE	CWE-89
Vendor	n/a
Product	postgresql
Ecosystems	Database
Industries	Technology
Published	Nov 12, 2026

Stay Ahead of the Next One

Get instant alerts for n/a postgresql

Be the first to know when new high vulnerabilities affecting n/a postgresql are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / PostgreSQL

18 < 18.7 17 < 17.12 16 < 16.16 15 < 15.20 0 < 14.25

References

NVD ↗ CVE.org ↗ EPSS Data ↗

postgresql.org: https://www.postgresql.org/support/security/CVE-2026-120153/

Credits

The PostgreSQL project thanks Anthropic OSS program, Sven Klemm, and Aaron chen for reporting this problem.