CVE-2026-21858 PoC — n8n 输入验证错误漏洞

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-21858.yaml

Associated Vulnerability

Title:n8n 输入验证错误漏洞 (CVE-2026-21858)
Description:n8n是n8n开源的一个可扩展的工作流自动化工具。 n8n 1.121.0之前版本存在输入验证错误漏洞，该漏洞源于攻击者可通过执行基于表单的工作流访问底层服务器文件，可能导致敏感信息泄露。

Description

n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker, resulting in exposure of sensitive information stored on the system and may enable further compromise depending on deployment configuration and workflow usage. This issue is fixed in version 1.121.0.

File Snapshot


 id: CVE-2026-21858

info:
  name: n8n Webhooks - Remote Code Execution
  author: rxerium
  severity:

...

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