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CVE-2026-56354— n8n - Cross-Site Scripting and Open Redirect in Form Node

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存在跨站脚本漏洞，该漏洞源于Form Node中未清理的HTML description字段和过于宽松的iframe sandbox策略，可能导致认证用户注入恶意脚本或重定向参数，执行存储型跨站脚本攻击或钓鱼重定向。以下版本受到影响：1.123.24之前版本、2.10.4之前版本和2.12.0版本。

CVSS 4.1 · Medium EPSS 0.24% · P14

Affected Version Matrix 10

VendorProduct Version RangeStatus
n8n n8n < 1.123.24 affected
1.123.24 unaffected
2.0.0-rc.0< 2.10.4 affected
2.10.4 unaffected
2.11.0< 2.12.0 affected
2.12.0 unaffected
< 2.10.4 affected
2.10.4 unaffected
… +2 more rows
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I. Basic Information for CVE-2026-56354

Vulnerability Information
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Vulnerability Title
n8n - Cross-Site Scripting and Open Redirect in Form Node
Source: CVE Program / CVE List V5
Vulnerability Description
n8n before 1.123.24, 2.10.4, and 2.12.0 (across its 1.x and 2.x branches) contains cross-site scripting and open redirect vulnerabilities in the Form Node due to unsanitized HTML description fields and overly permissive iframe sandbox policies. Authenticated users with workflow creation permissions can inject malicious scripts or redirect parameters to perform stored XSS attacks or phishing redirects against end users.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
n8n 跨站脚本漏洞
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存在跨站脚本漏洞，该漏洞源于Form Node中未清理的HTML description字段和过于宽松的iframe sandbox策略，可能导致认证用户注入恶意脚本或重定向参数，执行存储型跨站脚本攻击或钓鱼重定向。以下版本受到影响：1.123.24之前版本、2.10.4之前版本和2.12.0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 ~ 1.123.24 -
n8n n8n 0 ~ 2.10.4 -
n8n n8n 0 ~ 1.123.24 -

II. Public POCs for CVE-2026-56354

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III. Intelligence Information for CVE-2026-56354

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Vendor Advisories for CVE-2026-56354 (1)

News Coverage for CVE-2026-56354 (1)

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n
Same weakness: CWE-79

V. Comments for CVE-2026-56354

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