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CVE-2026-6638

nvd nist
Published: May 14, 2026Modified: Jun 17, 2026

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8.8
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: NVD

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.

Affected (3)

Postgresql
1 product
Postgresql
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Postgresql
Postgresql
From 16.0 to 16.14
Postgresql
From 17.0 to 17.10
Postgresql
From 18.0 to 18.4

Related CWEs

CWE-89
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

References (1)

Source: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
PatchVendor Advisory

Timeline

No history available yet.