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CVE-2026-6638

PostgreSQL REFRESH PUBLICATION allows SQL injection via table name

Published: May 14, 2026Updated: May 18, 2026 Sources: CVE List NVD BDUCWE-89
NVD MITRE
3.7CVSSLOW
EPSS Score
0.2%
Top 91.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:RS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-89

Affected Products

PostgreSQLn/a
postgresqlpostgresql
On-premDatabase
Databases / relational
SUSE Linux Enterprise Server for SAP ApplicationsNovell Inc.
On-premOS
Operating Systems / linux-distro
АЛЬТ СП 10АО «ИВК»
On-premOS
Operating Systems / linux-distro
Suse Linux Enterprise ServerNovell Inc.
On-premOS
Operating Systems / linux-distro
postgresqloss-projectUSDatabasesaka postgres
novell inc.commercialUSOperating Systems
ао «ивк»commercialRUOperating Systemsaka ivk
and 6 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://www.postgresql.org/support/security/CVE-2026-6638/
postgresql.org
https://www.postgresql.org/support/security/CVE-2026-6638/
postgresql.org
https://www.postgresql.org/about/news/postgresql-184-1710-1614-1518-and-1423-released-3297/
postgresql.org
and 4 more references View all →

Timeline

Published
May 14, 2026
Last Updated
May 18, 2026

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