by Kastro
Paper/Archive/CVE-2026-56351

CVE-2026-56351

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

EPSS 0.4%CVSS 9.6
critical.is priorityof 100
35
CVSS 9.6 (NVD)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 31.5.315 × 206.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
n8n< 2.4.02.4.0CNA

Scores by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
VulnCheck (CNA)8.2CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
VulnCheck (CNA)5.3CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisorygithub.com/n8n-io/n8n/security/advisories/GHSA-f3f2-mcxc-pwjxwriteupvulncheck.com/advisories/n8n-sql-injection-in-mysql-postgresql-and-microsoft-sql-nodes