CVE-2026-7846lowCWE-362CWE-367

CVE-2026-7846: low-severity vulnerability in chatchat-space Langchain-Chatchat

chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou

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28Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 2.1epss 0.2%
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.
CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Affected products
chatchat-space · Langchain-Chatchat
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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