EUVD-2026-27388
GHSA-xvqj-p4jj-r7xh
CVSS VectorNVD
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionNVD
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.
AnalysisAI
Missing authentication in Langchain-Chatchat up to version 0.3.1.3 allows unauthenticated local network attackers to access and manipulate files through the Compatible File Service endpoints (files/list_files, retrieve_file, retrieve_file_content, delete_file) in openai_routes.py without credentials. The vulnerability has a publicly available proof-of-concept exploit and affects confidentiality, integrity, and availability of stored files, though impact is limited to low severity per CVSS scoring; however, the lack of authentication on file operations represents a significant security control failure.
Sign in for full analysis, threat intelligence, and remediation guidance.
Share
External POC / Exploit Code
Leaving vuln.today