CVE-2026-51884

UNKNOWN View on NVD ↗

Description

The /knowledge_base/upload_temp_docs temporary document upload endpoint in Langchain Chatchat 0.3.1 is vulnerable to path traversal. By crafting malicious filenames, an attacker can write files to arbitrary locations on the server, bypassing the intended restrictions on the temporary directory.

References

https://gist.github.com/Ro1ME/da028c9ce13dd888e265b9bef01d6eca
https://github.com/chatchat-space/Langchain-Chatchat/issues/5466

Published: Oct 01, 2026 22:17 UTC Modified: Oct 01, 2026 22:17 UTC