GHSA-v5ff-9q35-q26f: Langflow: Unauthenticated RCE in Shareable Playgrounds

Summary

Langflow's Shareable Playground, also called Public Flows in the code, contains a critical remote code execution flaw. The route /api/v1/build_public_tmp executes any public flow given its flow ID, and the data.nodes[X].data.node.template.code.value field accepts arbitrary Python code from the JSON payload. The source states the impact as unauthenticated RCE on any deployment with a shareable playground, and tested on commit 2d67402b1dbaefcbce85a244d4a6cd5e4bda1cfe.

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.

• langflowPyPIReaches an LLM package through dependencies

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