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:
And there is an echo:
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.
{
"cwe_ids": [
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-16T21:23:17Z",
"nvd_published_at": null,
"severity": "MODERATE"
}