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GHSA-x229-w2j4-h748

Langchain-Chatchat has a Race Condition in its OpenAI-Compatible File Upload API

Source: GitHub Advisory Database (reviewed) Low CVE-2026-7846

Packages

EcosystemPackageAffectedFixed in
PyPI langchain-chatchat <= 0.3.1.3 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

References

External links from the advisory. They lead to third-party sites.