CVE-2025-6853CWE-22

chatchat-space Langchain-Chatchat Backend upload_temp_docs path traversal

Medium · published June 29, 2025

CVSS v4.0
5.3
EPSS
1%
Percentile
47.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
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
EPSS
0.00585 · 47.2th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2025-06-29T07:31Z
EPSS history
Timeline
  • 29 JUN 07:31Z
    chatchat-space Langchain-Chatchat Backend upload_temp_docs path traversal
    cvelistv5