CVE-2026-56270highobserved exploitationCWE-306

CVE-2026-56270: high-severity vulnerability in Flowise

Flowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint

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58Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actcvss 8.7epss 2.0%
from disclosure to weapon
Published on NVDJun 24
VulnCheck+14d
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
Flowise · Flowise
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