LangChain through 0.1.10 allows ../ directory traversal by an actor who is able to control the final part of the path parameter in a load_chain call. This bypasses the intended behavior of loading configurations only from the hwchase17/langchain-hub GitHub repository. The outcome can be disclosure of an API key for a large language model online service, or remote code execution. (A patch is available as of release 0.1.29 of langchain-core.)
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| langchain(PyPI) | 0 | 0.0.339 | N/A |
| langchain-core(PyPI) | 0 | 0.1.30 | N/A |
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