PT-2026-104042

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...

Langchain-Chatchat has a Path Traversal vulnerability

A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function uploadtempdocs of the file /knowledgebase/uploadtempdocs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to...

PYSEC-2026-1513 Langchain-Chatchat has a Path Traversal vulnerability

A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function uploadtempdocs of the file /knowledgebase/uploadtempdocs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to...

GHSA-QMGV-J263-QR33 Langchain-Chatchat has a Path Traversal vulnerability

A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function uploadtempdocs of the file /knowledgebase/uploadtempdocs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to...

Langchain-Chatchat has a Path Traversal vulnerability

A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function uploadtempdocs of the file /knowledgebase/uploadtempdocs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to...

PT-2025-27354

Name of the Vulnerable Software and Affected Versions: Langchain-Chatchat versions up to 0.3.1 Description: A critical vulnerability has been found in Langchain-Chatchat, affecting the upload temp docs function of the /knowledge base/upload temp docs file in the Backend component. The manipulatio...

LangChain-Chatchat path traversal vulnerability

LangChain-Chatchat is a Chatchat-Space open source chatbot software developed based on the LangChain framework. A path traversal vulnerability exists in LangChain-Chatchat 0.3.1 and earlier versions, which stems from path traversal due to incorrect manipulation of the parameter flag in the file...