CVE-2026-6476

PostgreSQL pg_createsubscriber allows SQL injection via subscription name

At a glance

Severity: HIGH 7.2
EPSS: EPSS 0.29 % · percentile 21 (2026-10-27)
State: PUBLISHED
Published: 2026-05-14
Updated: 2026-05-15
Assigner: PostgreSQL
NVD status: Analyzed

Description

SQL injection in PostgreSQL pg_createsubscriber allows an attacker with pg_create_subscription rights to execute arbitrary SQL as a superuser. The attack takes effect when pg_createsubscriber next runs. Within major versions 17 and 18, minor versions before PostgreSQL 18.4 and 17.10 are affected. Versions before PostgreSQL 17 are unaffected.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	PostgreSQL
CVSS 3.1	HIGH 7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	NVD · f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (Secondary)

Weaknesses (CWE)

CWE-89

European references

ENISA EUVD · EUVD-2026-30285
GCVE · GCVE-0-2026-6476

CERT-FR advisories

CERTFR-2026-AVI-1366 — Multiples vulnérabilités dans les produits Splunk · cert.ssi.gouv.fr
CERTFR-2026-AVI-0595 — Multiples vulnérabilités dans PostgreSQL · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* ≥ 17.0 < 17.10
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* ≥ 18.0 < 18.4

Affected products

Product	Versions
PostgreSQL	affected 18 < 18.4 ; affected 17 < 17.10

References

https://www.postgresql.org/support/security/CVE-2026-6476/

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD