CVE-2026-56270

HIGH

Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod endpoint that allows unauthenticated users to retrieve an organization's complete SSO configuration, including OAuth client secrets in cleartext, by providing an organizationId parameter. Remote attackers can send a GET request to harvest sensitive API credentials for Google, Microsoft/Azure, GitHub, and Auth0 integrations. This affects FlowiseAI Cloud and self-hosted instances where the endpoint is exposed.

CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Published: 6/24/2026Modified: 6/26/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-56270 — Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentica...

Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod endpoint that allows unauthenticated users to retrieve an organization's complete SSO configuration, including OAuth client secrets in cleartext, by providing an organizationId parameter. Remote attackers can send a GET request to harvest sensitive API credentials for Googl

CVE-2026-56270
NIST NVD

References (3)

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6pcv-j4jx-m4vxExploitVendor Advisoryhttps://www.vulncheck.com/advisories/flowise-unauthenticated-oauth-secrets-disclosure-via-api-v1-loginmethod-endpointThird Party Advisoryhttps://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6pcv-j4jx-m4vxExploitVendor Advisory