| Package | Affected versions | Patched versions |
|---|---|---|
| flowise | < 3.1.0 | 3.1.0 |
| flowise | < 3.1.0 | 3.1.0 |
| flowise-components | < 3.1.0 | 3.1.0 |
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
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
This is a Server-Side Request Forgery (SSRF) vulnerability that may lead to the following risks:
This vulnerability significantly increases the risk of internal service enumeration and potential lateral movement in enterprise environments.
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