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CVE-2026-30820— Flowise Authorization Bypass via Spoofed x-request-from Header

Quick assessment

Affected
FlowiseAI Flowise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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 3.0.13之前版本存在安全漏洞，该漏洞源于信任任意设置x-request-from标头的HTTP客户端，可能导致低权限租户绕过授权检查并提升权限。

AI Predicted 9.8 Difficulty: Easy EPSS 0.65% · P49

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-30820

Vulnerability Information
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Vulnerability Title
Flowise Authorization Bypass via Spoofed x-request-from Header
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 version 3.0.13, Flowise trusts any HTTP client that sets the header x-request-from: internal, allowing an authenticated tenant session to bypass all /api/v1/** authorization checks. With only a browser cookie, a low-privilege tenant can invoke internal administration endpoints (API key management, credential stores, custom function execution, etc.), effectively escalating privilege. This issue has been patched in version 3.0.13.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Flowise 安全漏洞
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 3.0.13之前版本存在安全漏洞，该漏洞源于信任任意设置x-request-from标头的HTTP客户端，可能导致低权限租户绕过授权检查并提升权限。
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
FlowiseAI Flowise < 3.0.13 -

II. Public POCs for CVE-2026-30820

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III. Intelligence Information for CVE-2026-30820

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Patches & Fixes for CVE-2026-30820 (1)

Vendor Advisories for CVE-2026-30820 (1)

Same Patch Batch · FlowiseAI · 2026-03-07 · 5 CVEs total

CVE-2026-30824 Flowise: Missing Authentication on NVIDIA NIM Endpoints
CVE-2026-30823 Flowise: IDOR leading to Account Takeover and Enterprise Feature Bypass via SSO Configurat
CVE-2026-30822 Flowise: Mass Assignment in `/api/v1/leads` Endpoint
CVE-2026-30821 Flowise: Arbitrary File Upload via MIME Spoofing

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: FlowiseAI
Same weakness: CWE-863

V. Comments for CVE-2026-30820

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