High severity8.2NVD Advisory· Published Jun 24, 2026· Updated Jun 26, 2026
CVE-2026-56351
CVE-2026-56351
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
n8nnpm | < 2.4.0 | 2.4.0 |
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-f3f2-mcxc-pwjxghsaADVISORY
- github.com/n8n-io/n8n/security/advisories/GHSA-f3f2-mcxc-pwjxnvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-56351ghsaADVISORY
- www.vulncheck.com/advisories/n8n-sql-injection-in-mysql-postgresql-and-microsoft-sql-nodesnvdThird Party AdvisoryWEB
- github.com/n8n-io/n8n/commit/f73fae6fe7fc34907bba102648a9997186aa4385ghsaWEB
- github.com/n8n-io/n8n/releases/tag/n8n%402.4.0ghsaWEB
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