CVE-2026-56351

EUVD-2026-38753
n8n before version 2.4.0 contains a sql injection vulnerability in MySQL, PostgreSQL, and Microsoft SQL nodes that allows authenticated users to inject arbitrary SQL through unescaped identifier values in node configuration parameters. Attackers with workflow creation permissions can supply specially crafted table or column names to execute unauthorized database commands and compromise data integrity.
SQL Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
8.2 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 11%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
n8nn8n
𝑥
< 2.4.0
CNA
Common Weakness Enumeration
References
https://github.com/n8n-io/n8n/security/advisories/GHSA-f3f2-mcxc-pwjx
https://www.vulncheck.com/advisories/n8n-sql-injection-in-mysql-postgresql-and-microsoft-sql-nodes