n8n Vulnerable to Prototype Pollution in XML & GSuiteAdmin node parameters lead to RCE

n8n is an open source workflow automation platform. Prior to versions 2.14.1, 2.13.3, and 1.123.27, an authenticated user with permission to create or modify workflows could exploit a prototype pollution vulnerability in the XML and the GSuiteAdmin nodes. By supplying a crafted parameters as part of node configuration, an attacker could write attacker-controlled values onto `Object.prototype`. An attacker could use this prototype pollution to achieve remote code execution on the n8n instance. The issue has been fixed in n8n versions 2.14.1, 2.13.3, and 1.123.27. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Limit workflow creation and editing permissions to fully trusted users only, and/or disable the XML node by adding `n8n-nodes-base.xml` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

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CWE-1321

n8n 安全漏洞

n8n是n8n开源的一个可扩展的工作流自动化工具。 n8n 2.14.1之前版本、2.13.3之前版本和1.123.27之前版本存在安全漏洞，该漏洞源于XML和GSuiteAdmin节点存在原型污染，可能导致远程代码执行。

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