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CVE-2026-110840— n8n before 2.41.4 and 2.42.1 SQL Injection via Microsoft SQL Node Query Field

Quick assessment

Affected
n8n-io 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.

在 n8n 2.41.4 之前以及 2.42.x 版本中 2.42.1 之前的版本，Microsoft SQL 节点的第 1 版存在 SQL 注入漏洞。该漏洞是由于直接将查询字段中的表达式值代入 SQL 文本，而未使用参数化查询。当工作流将不受信任的输入（例如 webhook 字段）绑定到查询字段时，未经身份验证的外部调用者可以利用存储的凭据权限，对连接的数据库执行任意 SQL 语句。

CVSS 7.0 · High EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
n8n-io n8n < 2.41.4 affected
2.42.0< 2.42.1 affected
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I. Basic Information for CVE-2026-110840

Vulnerability Information
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Vulnerability Title
n8n before 2.41.4 and 2.42.1 SQL Injection via Microsoft SQL Node Query Field
Source: CVE Program / CVE List V5
Vulnerability Description
n8n before 2.41.4 and 2.42.x before 2.42.1 contains an SQL injection vulnerability in version 1 of the Microsoft SQL node, which substitutes Query field expression values directly into SQL text without parameterisation. When a workflow binds untrusted input such as webhook fields to the Query field, unauthenticated external callers can execute arbitrary SQL against the connected database with the stored credential's privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:L
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
n8n-io n8n 0 ~ 2.41.4 -

II. Public POCs for CVE-2026-110840

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III. Intelligence Information for CVE-2026-110840

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Other References for CVE-2026-110840 (2)

Same Patch Batch · n8n-io · 2026-10-14 · 14 CVEs total

CVE-2026-110843 8.2 HIGH n8n before 2.41.4 and 2.42.1 Unauthenticated Unbounded OAuth Client Persistence via Author
CVE-2026-110842 7.7 HIGH n8n before 2.41.4 and 2.42.1 Prototype Pollution via MCP Workflow-Validation Interpreter
CVE-2026-110845 7.7 HIGH n8n before 1.123.83, 2.41.4, and 2.42.1 Code Execution via Git Node Log Operation
CVE-2026-110850 7.2 HIGH n8n before 2.41.4 and 2.42.1 Credential Check Bypass via Agent Node Parameters
CVE-2026-110844 7.2 HIGH n8n before 1.123.83 Credential Authorization Bypass via Nested Inline Sub-Workflows
CVE-2026-110849 7.2 HIGH n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Binary-Data File Preview
CVE-2026-110853 7.1 HIGH n8n before 1.123.83 Authorization Bypass via Execute Sub-workflow Inline JSON
CVE-2026-110846 7.0 HIGH n8n before 2.41.4 and 2.42.1 Send-and-Wait HMAC Signature Bypass via Waiting-Webhook
CVE-2026-110847 7.0 HIGH n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Chat Trigger customCss Parameter
CVE-2026-110852 6.3 MEDIUM n8n before 1.123.83, 2.41.4, and 2.42.1 Unauthenticated Workflow Execution via Dynamic-Pat
CVE-2026-110851 6.1 MEDIUM n8n before 2.41.4 and 2.42.1 Cross-Project Agent Ownership Transfer via Agents Create Endp
CVE-2026-110841 6.1 MEDIUM n8n before 2.41.4 and 2.42.0 Authorization Bypass in Agent Chat Resume Tool Approval
CVE-2026-110848 6.0 MEDIUM n8n before 1.123.83, 2.41.4, and 2.42.1 Prototype Pollution via AI Workflow Builder Connec

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-110840

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