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CVE-2026-69255— Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified

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.

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CSVAgent未验证初始代码块，将攻击者控制的CSV数据直接插入可执行Python代码，可能导致经过身份验证的攻击者通过Pyodide的js bridge加载Node.js child_process并执行任意操作系统命令。

CVSS 9.2 · Critical EPSS 0.72% · P52

Affected Version Matrix 1

VendorProduct Version RangeStatus
FlowiseAI Flowise < 3.1.3 affected
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I. Basic Information for CVE-2026-69255

Vulnerability Information
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Vulnerability Title
Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the CSVAgent in packages/components/nodes/agents/CSVAgent/CSVAgent.ts extracted attacker-controlled CSV data with file.split(',').pop() and interpolated it directly into executable Python as base64_string = "${base64String}" before calling Pyodide. The validatePythonCodeForDataFrame() denylist only checked later LLM-generated code and did not validate this initial code block. An authenticated attacker could inject a closing quote followed by Python code, use Pyodide's js bridge to load Node.js child_process, and execute arbitrary operating system commands as root in the Flowise container. This issue is fixed in version 3.1.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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
FlowiseAI Flowise 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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CSVAgent未验证初始代码块，将攻击者控制的CSV数据直接插入可执行Python代码，可能导致经过身份验证的攻击者通过Pyodide的js bridge加载Node.js child_process并执行任意操作系统命令。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FlowiseAI Flowise < 3.1.3 -

II. Public POCs for CVE-2026-69255

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Qwen3.6-35B-A3B · 9067 chars
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III. Intelligence Information for CVE-2026-69255

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Patches & Fixes for CVE-2026-69255 (2)

Vendor Advisories for CVE-2026-69255 (1)

Vendor Pages for CVE-2026-69255 (1)

Same Patch Batch · FlowiseAI · 2026-08-04 · 22 CVEs total

CVE-2026-70477 9.5 CRITICAL Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
CVE-2026-70470 9.5 CRITICAL Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE
CVE-2026-69254 9.4 CRITICAL Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override
CVE-2026-69259 9.4 CRITICAL Flowise RCE via SQLite Record Manager Node
CVE-2026-69256 9.4 CRITICAL Flowise: Remote Code Execution Vulnerability in CSVAgent
CVE-2026-69264 9.4 CRITICAL Flowise: RCE via CSVAgent csvFile data URI base64 segment is interpolated into Python sour
CVE-2026-70478 9.2 CRITICAL Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables tok
CVE-2026-69253 9.0 CRITICAL Flowise Sandbox Escape to RCE
CVE-2026-69251 9.0 CRITICAL Flowise RCE via TypeORM DataSource
CVE-2026-69258 8.8 HIGH Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overr
CVE-2026-69263 8.7 HIGH Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable bloc
CVE-2026-69250 8.5 HIGH Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration
CVE-2026-70473 8.3 HIGH Flowise: Information Disclosure in GET /api/v1/upsert-history returns the entire server-wi
CVE-2026-70476 8.3 HIGH Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billin
CVE-2026-69257 7.6 HIGH Flowise: SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses
CVE-2026-70474 7.6 HIGH Flowise: Cross-Workspace OAuth2 Credential Metadata Leak
CVE-2026-69252 7.2 HIGH Flowise: Missing authorization on `/api/v1/files` allows low-privileged API keys to list a
CVE-2026-69262 7.1 HIGH Flowise: `DELETE /api/v1/chatflows/:id` does not validate resource type, allowing `agentfl
CVE-2026-70471 7.1 HIGH Flowise: RBAC Bypass Leading to Unauthorized Workspace Variables Disclosure
CVE-2026-70472 7.1 HIGH Flowise: Cross-workspace credential IDOR in openai-assistants-vector-store

Showing top 20 of 22 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-69255

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