CVE-2026-7844: Chatchat-Space Langchain-Chatchat

Medium severity, CVSS 6.3. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability was detected in chatchat-space Langchain-Chatchat up to 0.3.1.3. This vulnerability affects the function files/list_files/retrieve_file/retrieve_file_content/delete_file of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component Compatible File Service. The manipulation results in missing authentication. The attacker must have access to the local network to execute the attack. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

• Chatchat-Space Langchain-Chatchat: version 0.3.1.0 only; version 0.3.1.1 only; version 0.3.1.2 only; version 0.3.1.3 only

Published 2026-05-05. Last modified 2026-07-24.