CVE-2026-42230— n8n 输入验证错误漏洞

n8n: Open Redirect in MCP OAuth Consent Flow

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /mcp-oauth/register endpoint accepted OAuth client registrations without authentication, allowing arbitrary redirect_uri values to be registered. When a user denies the MCP OAuth consent dialog, the handleDeny handler redirects the user to the registered redirect_uri without validation, enabling an open redirect to an attacker-controlled URL. An attacker can craft a phishing link and send it to a victim; if the victim clicks "Deny" on the consent page, they are silently redirected to an external site. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

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指向未可信站点的URL重定向(开放重定向)

n8n 输入验证错误漏洞

n8n是n8n开源的一个可扩展的工作流自动化工具。 n8n 1.123.32之前版本、2.17.4之前版本和2.18.1之前版本存在输入验证错误漏洞，该漏洞源于/mcp-oauth/register端点接受未经身份验证的OAuth客户端注册且允许任意redirect_uri值，可能导致用户拒绝MCP OAuth同意对话框时被重定向至攻击者控制的URL，实现开放重定向。

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