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CVE-2026-56270

CVE-2026-56270 · Flowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 8.7 · High · EPSS 2.0% · Public exploit · Fix available

Published
Updated

Stack: node

Affected products and versions

  • flowise

    Versions
    • ≥ 0, < 3.1.0: Affected (semver)
    • 3.1.0: Not affected (semver)

    Update to 3.1.0

  • flowise npm

    Affected ranges
    • SEMVER: < 3.1.0

    Update to 3.1.0

Original sources

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