CVE-2026-7844 chatchat-space Langchain-Chatchat Compatible File Service openai_routes.py delete_file missing authentication
Attackers on the local network can access and delete files in Langchain-Chatchat due to missing authentication in the Compatible File Service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7844?
CVE-2026-7844 is a medium-severity missing authorization vulnerability in chatchat-space Langchain-Chatchat, published on 5 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-7844?
How do I fix CVE-2026-7844?
No fix has been published for CVE-2026-7844 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-7844 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7844 exists.
Sources
Also known as GHSA-xvqj-p4jj-r7xh.