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CVE-2026-56275— Flowise - Server-Side Request Forgery via Execute Flow Base URL

Quick assessment

Affected
Flowise 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.

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。 Flowise 3.1.0之前版本存在服务端请求伪造漏洞，该漏洞源于httpSecurity.ts中缺少secureFetch验证，可能导致服务端请求伪造攻击，通过base URL字段提供内网地址绕过安全验证，发起HTTP请求访问内部网络地址、云元数据和枚举内部服务。

AI Predicted 9.1 Difficulty: Easy EPSS 0.32% · P22

Affected Version Matrix 4

VendorProduct Version RangeStatus
Flowise Flowise < 3.1.0 affected
3.1.0 unaffected
< 3.1.0 affected
3.1.0 unaffected
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I. Basic Information for CVE-2026-56275

Vulnerability Information
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Vulnerability Title
Flowise - Server-Side Request Forgery via Execute Flow Base URL
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise before 3.1.0 contains a server-side request forgery vulnerability in the Execute Flow node that allows attackers to bypass security validation by providing intranet addresses through the base URL field. Attackers can initiate HTTP requests to internal network addresses, access cloud metadata, and enumerate internal services by exploiting the missing secureFetch verification in httpSecurity.ts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Flowise 服务端请求伪造漏洞
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。 Flowise 3.1.0之前版本存在服务端请求伪造漏洞，该漏洞源于httpSecurity.ts中缺少secureFetch验证，可能导致服务端请求伪造攻击，通过base URL字段提供内网地址绕过安全验证，发起HTTP请求访问内部网络地址、云元数据和枚举内部服务。
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 0 ~ 3.1.0 -
Flowise Flowise 0 ~ 3.1.0 -

II. Public POCs for CVE-2026-56275

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III. Intelligence Information for CVE-2026-56275

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Vendor Advisories for CVE-2026-56275 (2)

Same Patch Batch · Flowise · 2026-06-23 · 3 CVEs total

CVE-2026-56274 9.9 CRITICAL Flowise - Remote Code Execution via MCP Security Bypass in validateCommandFlags and valida
CVE-2025-71337 8.3 HIGH Flowise - Unverified Email Change via Account Profile Endpoint

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: Flowise
Same weakness: CWE-918

V. Comments for CVE-2026-56275

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