CVE-2026-69253— Flowise Sandbox Escape to RCE

Flowise Sandbox Escape to RCE

Flowise is a drag-and-drop user interface for building customized large language model (LLM) flows. Prior to version 3.1.3, several custom-tool components — AgentAsTool, ChatflowTool, and ExecuteFlow — ran code in the in-process  vm2  sandbox. To build that code, they inserted a user-controlled  baseURL  value straight into the JavaScript source, for example  const url = "${baseURL}/..."; . The only check on  baseURL  was  isValidURL , but a valid-looking URL can still contain characters that break out of a code string. An authenticated user could craft a  baseURL  that passed this check, closed the surrounding string, and injected their own JavaScript into the sandboxed script (code injection, CWE-94). The  vm2  sandbox runs in the same Node.js process as Flowise and exposes risky dependencies. As a result, the injected code could escape the sandbox and run arbitrary code on the Flowise server as the Flowise process user. Exploitation only requires an authenticated session. The issue is fixed in version 3.1.3, which passes the URL to the sandbox as data instead of inserting it into code and adds stricter URL validation.

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

动态执行代码中指令转义处理不恰当(Eval注入)

FlowiseAI Flowise 代码注入漏洞

FlowiseAI Flowise是FlowiseAI公司开源的一个用于轻松构建 LLM 应用程序的工具。 FlowiseAI Flowise 3.1.3之前版本存在代码注入漏洞，该漏洞源于AgentAsTool、ChatflowTool和ExecuteFlow组件将用户可控的baseURL参数直接插入JavaScript源代码，且仅通过isValidURL检查，可能导致经过身份验证的攻击者注入JavaScript代码并逃逸vm2沙箱，从而在Flowise服务器上执行任意代码。

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