# CVE-2026-120153: PostgreSQL extension-script substitutions allow SQL injection through object names

Status: published. Published: 2026-11-12. Updated: 2026-11-12.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- n/a / PostgreSQL: ≥ 18; < 18.7 (affected, rpm); ≥ 17; < 17.12 (affected, rpm); ≥ 16; < 16.16 (affected, rpm); ≥ 15; < 15.20 (affected, rpm); ≥ 0; < 14.25 (affected, rpm). Source: CNA: PostgreSQL

## Severity and prioritization

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H; source: CNA: PostgreSQL

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-89

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.postgresql.org/support/security/CVE-2026-120153/ (CNA: PostgreSQL)

## Provenance

- CNA: PostgreSQL: https://www.cve.org/CVERecord?id=CVE-2026-120153; retrieved 2026-11-12; source updated 2026-11-12

Revision: 172bdb1abc24a7847c9556ebdf7b381ac5f837fea6cd6e58cfa8190dfbf60d1c

Canonical: https://y2.dev/cve/CVE-2026-120153

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