GHSA-6vh2-wg4h-4vwj: Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overrideConfig` Spread in Prediction API

Summary

The unauthenticated POST /api/v1/prediction/:id endpoint in Flowise accepts an overrideConfig object and spreads it unconditionally into flowConfig (packages/server/src/utils/buildChatflow.ts) and flowData (packages/server/src/utils/index.ts) without checking apiOverrideStatus. An unauthenticated attacker can inject arbitrary properties into the execution context of any public chatflow, such as overwriting chatId to reach a victim's session or altering $flow.* template variables. This is distinct from GHSA-5cph-wvm9-45gj, which covered node input parameter overrides.

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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