CVE-2026-56270 — Flowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint
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 retri…
Published: 2026-06-24 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7