---
id: CVE-2026-70478
title: >-
  Flowise is a drag & drop user interface to build a customized large language
  model flow
summary: >-
  Flowise is a drag & drop user interface to build a customized large language
  model flow. Prior to 3.1.3, the POST
  /api/v1/oauth2-credential/refresh/:credentialId endpoint is included in
  WHITELIST_URLS and requires no authentication. The …
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-200
vendor: flowiseai
product: flowise
affected:
  - flowise < 3.1.3
patched:
  - flowise 3.1.3
published: '2026-08-04'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T21:14:26.357'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70478'
references:
  - url: >-
      https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-qgvm-j2hm-6m38
    label: security-advisories@github.com
  - url: >-
      https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-qgvm-j2hm-6m38
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-qgvm-j2hm-6m38'
tags:
  - nvd
  - ghsa
  - npm
epss: 0.00534
epssPercentile: 0.4408
aliases:
  - GHSA-qgvm-j2hm-6m38
ecosystem: npm
ingestedAt: '2026-08-04T19:41:28.858Z'
---

## Overview

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the POST /api/v1/oauth2-credential/refresh/:credentialId endpoint is included in WHITELIST_URLS and requires no authentication. The endpoint decrypts the stored credential, sends a refresh request to the configured OAuth provider with the client secret and refresh token, and returns the refreshed access_token in the response body. An attacker with a credential ID can use the token to access the victim's connected service and can also exhaust refresh-token quota. This issue is fixed in 3.1.3.

## Affected

- `flowise < 3.1.3`

## Remediation

Upgrade past the affected range:

- `flowise 3.1.3`

## Package advisory (CVE-2026-70478)

Affected packages:

- `flowise <= 3.1.2`

Patched in:

- `flowise 3.1.3`

Source: https://github.com/advisories/GHSA-qgvm-j2hm-6m38