Auth bypass in Chatchat-space Langchain-chatchat
CVE-2026-7844
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_…
Vulnerability class: Broken Authentication
EPSS: 0.001 (18.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Chatchat-space Langchain-chatchat — versions 0.3.1.0, 0.3.1.1, 0.3.1.2
Weakness classification (CWE)
References
- cna@vuldb.com (exploit)
- cna@vuldb.com (product)
- cna@vuldb.com (issue-tracking)
- Submit #807790 | chatchat-space Langchain-Chatchat 0.3.1.3 Missing Authorization / CWE-862 (third-party-advisory)
- VDB-361123 | chatchat-space Langchain-Chatchat Compatible File Service openai_routes.py delete_file missing authentication (technical-description, vdb-entry)
- VDB-361123 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-7844?
- CVE-2026-7844 is a medium-severity vulnerability in Chatchat-space Langchain-chatchat, classified under Improper Authentication. CVSS score: 6.3/10. Published 2026-05-05.
- How severe is CVE-2026-7844?
- Medium severity. CVSS v3 base score is 6.3 out of 10.