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

Quick assessment

Affected
n8n n8n
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

n8n是n8n公司开源的一个可扩展的工作流自动化工具。 n8n 2.4.0之前版本存在SQL注入漏洞，该漏洞源于未转义的标识符值，可能导致经过身份验证的攻击者在MySQL、PostgreSQL和Microsoft SQL节点中执行SQL注入攻击，通过提供特制的表名或列名从而执行未授权数据库命令并破坏数据完整性。

CVSS 8.2 · High EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
n8n n8n < 2.4.0 affected
2.4.0 unaffected
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I. Basic Information for CVE-2026-56351

Vulnerability Information
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Vulnerability Title
n8n - SQL Injection in MySQL, PostgreSQL, and Microsoft SQL Nodes
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
n8n SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n公司开源的一个可扩展的工作流自动化工具。 n8n 2.4.0之前版本存在SQL注入漏洞，该漏洞源于未转义的标识符值，可能导致经过身份验证的攻击者在MySQL、PostgreSQL和Microsoft SQL节点中执行SQL注入攻击，通过提供特制的表名或列名从而执行未授权数据库命令并破坏数据完整性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
n8n n8n 0 ~ 2.4.0 -

II. Public POCs for CVE-2026-56351

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III. Intelligence Information for CVE-2026-56351

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Vendor Advisories for CVE-2026-56351 (2)

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n
Same weakness: CWE-89

V. Comments for CVE-2026-56351

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