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CVE-2026-46441 — flowise

CVE-2026-46441 is a CWE-284 vulnerability in flowise. A fix is available for flowise — see the affected versions and patch details below.

Flowise: Mass Assignment in Assistant Update Endpoint Allows Cross-Workspace Resource Reassignment

Also known asGHSA-hp26-q66v-q2w7
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-46441.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs20th percentile — riskier than 20% of all scored CVEsHighest risk
0.00%0.29%0.58%0.87%0.3%0.3%Jul 26Oct 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
flowisenpm
8Kdownloads / week

Description

Summary

A Mass Assignment vulnerability exists in the assistant update endpoint of FlowiseAI.

The endpoint allows authenticated users to modify server-controlled properties such as workspaceId, createdDate, and updatedDate when updating an assistant resource.

Due to missing server-side validation and authorization checks, an attacker can manipulate the workspaceId field and reassign assistants to arbitrary workspaces. This breaks tenant isolation in multi-workspace environments.

Details

The endpoint responsible for updating assistants:

PUT /api/v1/assistants/{assistantId}

accepts a JSON request body containing assistant metadata.

However, the server does not restrict which properties may be modified by the client. As a result, user-controlled request bodies can include additional fields that should normally be controlled only by the backend.

Server-controlled fields that can be manipulated include:

  1. workspaceId
  2. createdDate
  3. updatedDate

These fields appear to be directly mapped to the underlying database entity without strict DTO whitelisting or authorization checks.

For example, the following request body was accepted:

{
  "details": "",
  "credential": "11ca7fef-c9b1-4c87-aa54-e547aed8a249",
  "iconSrc": null,
  "type": "CUSTOM",
  "createdDate": "2026-03-06T17:31:04.000Z",
  "updatedDate": "2026-03-06T17:31:55.000Z",
  "workspaceId": "11111111-2222-3333-4444-555555555555"
}

This indicates that internal, server-controlled properties can be modified by an authenticated user.

PoC

  1. Authenticate to the Flowise interface.
  2. Capture the request used to update an assistant:
PUT /api/v1/assistants/<ASSISTANT_ID>
Content-Type: application/json

Modify the request body by injecting server-controlled fields:

{
  "details": "",
  "credential": "11ca7fef-c9b1-4c87-aa54-e547aed8a249",
  "iconSrc": null,
  "type": "CUSTOM",
  "createdDate": "2026-03-06T17:31:04.000Z",
  "updatedDate": "2026-03-06T17:31:55.000Z",
  "workspaceId": "11111111-2222-3333-4444-555555555555"
}

3.Send the request.

Observe that the response accepts and persists the attacker-controlled workspaceId and metadata fields.

Impact

This vulnerability allows authenticated users to manipulate internal attributes of assistant resources.

Confirmed impacts include:

  • Cross-workspace reassignment of assistants (workspaceId)
  • Unauthorized modification of metadata (createdDate, updatedDate)

In multi-tenant deployments, this may allow an attacker to move assistants between workspaces without authorization, breaking tenant isolation boundaries.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmflowiseall versions3.1.2npm install flowise@3.1.2

Affected Products

1 product · 1 configurations
Application
flowiseflowiseai
< 3.1.2
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for flowise, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update flowise to 3.1.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-46441 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

### Summary A Mass Assignment vulnerability exists in the assistant update endpoint of FlowiseAI. The endpoint allows authenticated users to modify server-controlled properties such as workspaceId, createdDate, and updatedDate when updating an assistant resource. Due to missing server-side validation and authorization checks, an attacker can manipulate the workspaceId field and reassign assistants to arbitrary workspaces. This breaks tenant isolation in multi-workspace environments. ### Details The endpoint responsible for updating assistants: **PUT /api/v1/assistants/{assistantId}** acce
O3 Security · Impact-Aware SCA

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CVE-2026-46441: flowise — Fixed in 3.1.2