Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2025-59528— Flowise has Remote Code Execution vulnerability

Quick assessment

Affected
FlowiseAI Flowise
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Flowise是FlowiseAI开源的一个用于轻松构建 LLM 应用程序的工具。 Flowise 3.0.5版本存在代码注入漏洞，该漏洞源于CustomMCP节点直接执行用户输入的JavaScript代码，可能导致远程代码执行。

CVSS 10.0 · Critical EPSS 87.37% · P100

Public Exploits 3

ExploitDB · 1 EDB-52440 [webapps]
Metasploit · 1 flowise_js_rce.rb [exploit]
Nuclei · 1 CVE-2025-59528.yaml [template]
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-59528

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Flowise has Remote Code Execution vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise is a drag & drop user interface to build a customized large language model flow. In version 3.0.5, Flowise is vulnerable to remote code execution. The CustomMCP node allows users to input configuration settings for connecting to an external MCP server. This node parses the user-provided mcpServerConfig string to build the MCP server configuration. However, during this process, it executes JavaScript code without any security validation. Specifically, inside the convertToValidJSONString function, user input is directly passed to the Function() constructor, which evaluates and executes the input as JavaScript code. Since this runs with full Node.js runtime privileges, it can access dangerous modules such as child_process and fs. This issue has been patched in version 3.0.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Flowise 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flowise是FlowiseAI开源的一个用于轻松构建 LLM 应用程序的工具。 Flowise 3.0.5版本存在代码注入漏洞，该漏洞源于CustomMCP节点直接执行用户输入的JavaScript代码，可能导致远程代码执行。
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)

Shenlong Deep Dive — AI Deep Analysis

10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.

Read summary Full analysis (login)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FlowiseAI Flowise = 3.0.5 -

II. Public POCs for CVE-2025-59528

# POC Description Source Link Shenlong Link
1 None https://github.com/zimshk/CVE-2025-59528.yaml POC Details
2 CVE-2025-59528 https://github.com/B1ack4sh/Blackash-CVE-2025-59528 POC Details
3 CVE-2025-59528 https://github.com/Ashwesker/Blackash-CVE-2025-59528 POC Details
4 CVE-2025-59528 https://github.com/Ashwesker/Ashwesker-CVE-2025-59528 POC Details
5 Flowise 3.0.5 contains a remote code execution vulnerability caused by unsafe evaluation of user input in the CustomMCP node's convertToValidJSONString function, letting remote attackers execute arbitrary code with full Node.js privileges, exploit requires user input to be processed by the vulnerable node. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-59528.yaml POC Details
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6186 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2025-59528

请登录查看更多情报信息。

Vendor Advisories for CVE-2025-59528 (1)

Vendor Pages for CVE-2025-59528 (1)

Same Patch Batch · FlowiseAI · 2025-09-22 · 3 CVEs total

CVE-2025-59434 9.6 CRITICAL Critical Multi-Tenant Variable Disclosure in Flowise Cloud via Custom JavaScript Function
CVE-2025-59527 7.5 HIGH FlowiseAI/Flowise has Server-Side Request Forgery (SSRF) vulnerability

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: FlowiseAI
Same weakness: CWE-94

V. Comments for CVE-2025-59528

Anonymous User
2026-01-15 06:08:50

Zaproxy alias impedit expedita quisquam pariatur exercitationem. Nemo rerum eveniet dolores rem quia dignissimos.

Leave a comment