GHSA-6f7g-v4pp-r667: Flowise: Unauthenticated OAuth 2.0 Access Token Disclosure via Public Chatflow in Flowise

Summary

Flowise contains an authentication bypass that lets an unauthenticated attacker obtain OAuth 2.0 access tokens tied to a public chatflow. The GET /api/v1/public-chatbotConfig/<chatflowId> endpoint returns internal flowData without authentication, including OAuth credential identifiers. The POST /api/v1/oauth2-credential/refresh/<credentialId> endpoint then refreshes tokens without authentication or authorization checks, enabling access to third-party services such as Gmail.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Affected packages in the Exposure Registry

Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.

• flowisenpmLLM dependency since 2024-03-12

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