CVE-2026-6476
PostgreSQL pg_createsubscriber allows SQL injection via subscription name
7.2
HIGH
CVSS 3.1
EPSS 0.03%
Description
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.
How to fix CVE-2026-6476
To remediate CVE-2026-6476, upgrade the affected package to a fixed version below.
- —upgrade to 17.10-r0 or later
- —upgrade to 18.4-r0 or later
- —upgrade to 17.10.0 or later
- —upgrade to 17.10-0+deb13u1 or later
- —upgrade to 18.4-1 or later
Is CVE-2026-6476 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 17.10-r0
- from 0, < 18.4-r0
- >= 17.0.0, < 17.10.0, >= 18.0.0, < 18.4.0
- from 0, < 17.10-0+deb13u1
- from 0, < 18.4-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |