CVE-2026-56351: medium-severity vulnerability in n8n
n8n - SQL Injection in MySQL, PostgreSQL, and Microsoft SQL Nodes
Published
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.4%
exploitation probability
0.4%top 71% of all CVEs
observed exploitation
nono source reports it
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 · n8nRelated CVEs — n8n
In the same product, most dangerous first.
CVE-2026-59257MEDIUMn8n - SQL Injection in MySQL v1 executeQuery Operation via Expression InterpolationEPSS 0.6%CVE-2025-71380HIGHn8n - Arbitrary Command Execution via Execute Command NodeEPSS 0.6%CVE-2026-56348MEDIUMn8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters EndpointEPSS 0.5%CVE-2026-56349MEDIUMn8n - Guardrail Node Bypass via Crafted InputEPSS 0.5%CVE-2026-59259MEDIUMn8n - Permission Bypass via Expression Parser Mismatch in External SecretsEPSS 0.4%CVE-2026-58661MEDIUMn8n - Disk Space Exhaustion via Data-Table File Upload EndpointEPSS 0.4%