---
id: CVE-2026-56275
aliases:
  - GHSA-9hrv-gvrv-6gf2
title: Flowise Execute Flow function has an SSRF vulnerability
summary: Flowise Execute Flow function has an SSRF vulnerability
severity: medium
cvss: 7.1
cwe:
  - CWE-918
vendor: flowise
product: flowise
ecosystem: npm
affected:
  - flowise <= 3.0.13
  - flowise-components <= 3.0.13
patched:
  - flowise 3.1.0
  - flowise-components 3.1.0
published: '2026-04-16'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T21:24:58Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-9hrv-gvrv-6gf2'
references:
  - url: >-
      https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9hrv-gvrv-6gf2
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-56275'
  - url: >-
      https://www.vulncheck.com/advisories/flowise-server-side-request-forgery-via-execute-flow-base-url
  - url: 'https://github.com/advisories/GHSA-9hrv-gvrv-6gf2'
tags:
  - ghsa
  - npm
epss: 0.00315
epssPercentile: 0.21767
ingestedAt: '2026-09-23T21:33:13.541Z'
---

## Overview

### Summary

The attacker provides an intranet address through the base url field configured in the Execute Flow node 
→ Bypass checkDenyList / resolveAndValidate in httpSecurity.ts (not called)
→ Causes the server to initiate an HTTP request to any internal network address, read cloud metadata, or detect internal network services 

### Details

<img width="1280" height="860" alt="9a52a74e6fe2fd78e4962d1d68057fc2" src="https://github.com/user-attachments/assets/20df0006-9129-4886-8928-16d19a617c23" />

Then initiate the call: 

```
POST /api/v1/prediction/d6739838-d3b3-43d9-86ff-911a3d757a7e HTTP/1.1
Host: 127.0.0.1:3000
Content-Type: application/json
Authorization: Bearer apikey
Content-Length: 17

{"question": "1"}
```

Server received a request:

<img width="1432" height="172" alt="f45c757fec408e13739db068252ff21b" src="https://github.com/user-attachments/assets/d3dfe0f5-83ec-4c79-ab32-754382a68d5f" />

And there is an echo: 

<img width="1280" height="666" alt="fa0caf0deb306cfeeea8fdf8941a287e" src="https://github.com/user-attachments/assets/55a94d25-120b-4e9c-9517-46c2fc2b667f" />

Fix:
Call secureFetch for verification



### Impact

This is a Server-Side Request Forgery (SSRF) vulnerability that may lead to the following risks: 
- Explore Internal Web Applications
- Access sensitive management interfaces
- Leak internal configuration, credentials, or confidential information

This vulnerability significantly increases the risk of internal service enumeration and potential lateral movement in enterprise environments.

## Affected packages

- `flowise <= 3.0.13`
- `flowise-components <= 3.0.13`

## Remediation

Upgrade to a patched release:

- `flowise 3.1.0`
- `flowise-components 3.1.0`