CVE-2026-6638 LOW

CVE-2026-6638: PostgreSQL REFRESH PUBLICATION allows SQL injection via table name

Vendor N/A
Product PostgreSQL
Weakness CWE-89 · SQLi
Published May 14, 2026
Last update May 14, 2026
View on NVD All CVEs

CVSS base score

3.7/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

SQL injection in PostgreSQL logical replication ALTER SUBSCRIPTION ... REFRESH PUBLICATION allows a subscriber table creator to execute arbitrary SQL with the subscription's publication-side credentials. The attack takes effect at the next REFRESH PUBLICATION. Within major versions 16, 17, and 18, minor versions before PostgreSQL 18.4, 17.10, and 16.14 are affected. Versions before PostgreSQL 16 are unaffected.

Key dates

02Disclosure timeline

May 14, 2026 CVE published
May 14, 2026 Record updated