CVE-2025-6853 MEDIUM

CVE-2025-6853: chatchat-space Langchain-Chatchat Backend upload_temp_docs path traversal

Vendor Chatchat-Space
Product Langchain-Chatchat
Weakness CWE-22 · Path traversal
Published June 29, 2025
Last update June 30, 2025

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function upload_temp_docs of the file /knowledge_base/upload_temp_docs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Key dates

02Disclosure timeline

June 29, 2025 CVE published
June 30, 2025 Record updated