CVE-2026-7846

Description

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

https://vuldb.com/vuln/361125/cti

https://vuldb.com/vuln/361125

https://vuldb.com/submit/807795

https://github.com/chatchat-space/Langchain-Chatchat/issues/5463

https://github.com/chatchat-space/Langchain-Chatchat/

https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4