CVE-2026-56270

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 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6pcv-j4jx-m4vx
https://www.vulncheck.com/advisories/flowise-unauthenticated-oauth-secrets-disclosure-via-api-v1-loginmethod-endpoint
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6pcv-j4jx-m4vx

Configurations

No configuration.

History

24 Jun 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-24 13:16

Updated : 2026-06-25 14:26

NVD link : CVE-2026-56270

Mitre link : CVE-2026-56270

CVE.ORG link : CVE-2026-56270

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

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