CVE-2026-6638

LOW

PostgreSQL REFRESH PUBLICATION allows SQL injection via table name

Title source: cna

Description

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.

References (1)

Core 1

Core References

https://www.postgresql.org/support/security/CVE-2026-6638/

Scores

CVSS v3 3.7

EPSS 0.0002

EPSS Percentile 7.2%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-89

Status published

Products (4)

None/PostgreSQL 16 - 16.14

None/PostgreSQL 17 - 17.10

None/PostgreSQL 18 - 18.4

postgresql/postgresql 16.0 - 16.14

Published May 14, 2026

Tracked Since May 14, 2026