Vulnerability · Published Jun 24, 2026 · Assigned by VulnCheck

CVE-2026-56351n8n - SQL Injection in MySQL, PostgreSQL, and Microsoft SQL Nodes

High 8.2

In plain English

A high-severity SQL injection in n8n from n8n. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.4%top 68.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	2.4.0	GHSA-f3f2-mcxc-pwjx

Affected products (as reported)

Vendor	Product	Versions
n8n	n8n	0 – before 2.4.0

Weakness: CWE-89 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

References

GitHub Security Advisory (GHSA-f3f2-mcxc-pwjx) vendor-advisory
VulnCheck Advisory: n8n - SQL Injection in MySQL, PostgreSQL, and Microsoft SQL Nodes third-party-advisory