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CVE-2026-59257— n8n - SQL Injection in MySQL v1 executeQuery Operation via Expression Interpolation

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存在SQL注入漏洞，该漏洞源于legacy MySQL v1节点executeQuery操作中未对表达式值进行参数化，直接将评估后的{{ ... }}表达式值替换到原始SQL字符串中，当工作流使用此操作并连接外部可访问触发器（如Webhook节点）时，攻击者控制的输入可导致SQL注入，从而使用配置的MySQL凭据权限执行任意SQL。以下版本受到影响：1.123.61之前版本、2.27.4之前版本和2.28.1之前版本。

AI Predicted 9.8 Difficulty: Easy EPSS 0.57% · P45

Affected Version Matrix 6

VendorProduct Version RangeStatus
n8n n8n < 1.123.61 affected
1.123.61 unaffected
< 2.28.1 affected
2.28.1 unaffected
< 2.27.4 affected
2.27.4 unaffected
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I. Basic Information for CVE-2026-59257

Vulnerability Information
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Vulnerability Title
n8n - SQL Injection in MySQL v1 executeQuery Operation via Expression Interpolation
Source: CVE Program / CVE List V5
Vulnerability Description
n8n before 1.123.61, 2.x before 2.27.4, and 2.28.x before 2.28.1 contains a SQL injection vulnerability in the legacy MySQL v1 node's executeQuery operation. The operation substitutes evaluated {{ ... }} expression values directly into the raw SQL string without parameterization. When a workflow uses this operation with expression-sourced values and is connected to an externally-reachable trigger (such as a Webhook node), attacker-controlled input reaching those expressions results in SQL injection, allowing execution of arbitrary SQL with the configured MySQL credentials' privileges. The MySQL v2 node, which uses parameterized queries, is not affected.
Source: CVE Program / CVE List V5
CVSS Information
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
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存在SQL注入漏洞，该漏洞源于legacy MySQL v1节点executeQuery操作中未对表达式值进行参数化，直接将评估后的{{ ... }}表达式值替换到原始SQL字符串中，当工作流使用此操作并连接外部可访问触发器（如Webhook节点）时，攻击者控制的输入可导致SQL注入，从而使用配置的MySQL凭据权限执行任意SQL。以下版本受到影响：1.123.61之前版本、2.27.4之前版本和2.28.1之前版本。
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 ~ 1.123.61 -
n8n n8n 0 ~ 2.28.1 -
n8n n8n 0 ~ 2.27.4 -

II. Public POCs for CVE-2026-59257

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III. Intelligence Information for CVE-2026-59257

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Vendor Advisories for CVE-2026-59257 (2)

Same Patch Batch · n8n · 2026-07-08 · 7 CVEs total

CVE-2026-56776 7.4 HIGH n8n - Incorrect OAuth Scope Validation in Workflow Test Run Endpoint
CVE-2026-56778 6.4 MEDIUM n8n - Authorization Bypass in Public API Execution Retry Endpoint
CVE-2026-56359 5.4 MEDIUM n8n - Cross-Site Scripting in Credential Management OAuth2 Authorization URL
CVE-2026-56775 5.4 MEDIUM n8n - Incorrect OAuth Scope Validation in Evaluation Test Runs Endpoints
CVE-2026-56360 4.0 MEDIUM n8n - Webhook Forgery via Unsigned POST Requests in ZendeskTrigger
CVE-2026-59253 n8n - Improper Authorization in Workflow Assignment to Folders

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-59257

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