A vulnerability classified as critical has been found in... · CVE-2025-6853 · GitHub Advisory Database · GitHub

A vulnerability classified as critical has been found in...

Moderate severity Unreviewed Published Jun 29, 2025 to the GitHub Advisory Database • Updated Jun 29, 2025

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

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.

References

Published by the National Vulnerability Database

Jun 29, 2025

Published to the GitHub Advisory Database Jun 29, 2025

Last updated Jun 29, 2025

Weaknesses

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Learn more on MITRE.