CVE-2026-56351

n8n - SQL Injection in MySQL, PostgreSQL, and Microsoft SQL Nodes

CVSS 5.3 MEDIUMEPSS 0.2%CWE-89

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

24 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Affected products

n8n · n8n

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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