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CVE-2025-71327— Flowise - Authentication Bypass via Unprotected Registration Endpoint

Quick assessment

Affected
Flowise 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 3.0.1版本存在授权问题漏洞，该漏洞源于/api/v1/account/register端点未受保护，可能导致未经验证的攻击者创建用户账户，进而注册任意账户并认证系统，获得完整API访问权限。

CVSS 9.1 · Critical EPSS 0.58% · P45

Affected Version Matrix 1

VendorProduct Version RangeStatus
Flowise Flowise 3.0.1 affected
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I. Basic Information for CVE-2025-71327

Vulnerability Information
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Vulnerability Title
Flowise - Authentication Bypass via Unprotected Registration Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise contains an authentication bypass vulnerability in the unprotected /api/v1/account/register endpoint that allows unauthenticated attackers to create user accounts. Remote attackers can exploit this endpoint to register arbitrary accounts and authenticate to the system, gaining full API access without credentials.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
FlowiseAI Flowise 授权问题漏洞
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 3.0.1版本存在授权问题漏洞，该漏洞源于/api/v1/account/register端点未受保护，可能导致未经验证的攻击者创建用户账户，进而注册任意账户并认证系统，获得完整API访问权限。
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
Flowise Flowise 3.0.1 -

II. Public POCs for CVE-2025-71327

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 49694 chars
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2025-71327

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Vendor Advisories for CVE-2025-71327 (2)

Same Patch Batch · Flowise · 2026-06-25 · 8 CVEs total

CVE-2025-71338 10.0 CRITICAL Flowise - Arbitrary File Write to Remote Code Execution via document-store API
CVE-2025-71336 9.8 CRITICAL Flowise - Unsandboxed Remote Code Execution via Custom MCP
CVE-2025-71334 9.8 CRITICAL Flowise - Arbitrary File Access via Missing Chat Flow ID Validation
CVE-2025-71328 8.3 HIGH Flowise - Unverified Password Change via Account Settings
CVE-2025-71335 8.1 HIGH Flowise - Session Invalidation Failure After Password Change
CVE-2025-71324 7.5 HIGH Flowise - Arbitrary File Read via chatId Parameter
CVE-2025-71333 Flowise - Arbitrary File Upload via Unauthenticated /api/v1/attachments Endpoint

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: Flowise
Same weakness: CWE-306

V. Comments for CVE-2025-71327

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