CVE-2026-6476

What it is

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.

At a glance

Exploitability

Can be exploited over the network with an admin-level account. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-05-14 14:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 11:00 UTC Last updatedMost recent change to the record

Details

Published

2026-05-14 14:16 UTC

Last modified

2026-06-17 11:00 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-89 · SQL injection

Record status

Analyzed

Affected

• PostgreSQL < 17.10
• PostgreSQL < 18.4

Attack profile CVSS 3.1 · 7.2

Attack vector

Network

Complexity

Low

Privileges needed

High

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High