Unknown · Langchain-Chatchat · CVE-2026-7844
**Name of the Vulnerable Software and Affected Versions**
Langchain-Chatchat versions prior to 0.3.1.4
**Description**
A missing authentication issue exists in the Compatible File Service component within the file `libs/chatchat-server/chatchat/server/api server/openai routes.py`. This flaw affects the functions `files()`, `list files()`, `retrieve file()`, `retrieve file content()`, and `delete file()`. An attacker with local network access can exploit this to perform unauthorized actions.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
As a temporary workaround, restrict access to the functions `files()`, `list files()`, `retrieve file()`, `retrieve file content()`, and `delete file()` within the Compatible File Service to minimize the risk of exploitation.