Package Instance

OpenChatBI has a Path Traversal Vulnerability in save_report Tool
The `save_report` tool in `openchatbi/tool/save_report.py` suffers from a critical path traversal vulnerability due to insufficient input sanitization of the `file_format` parameter.

The function only removes leading dots of `file_format` using `file_format.lstrip(".")` but allows path traversal sequences like `/../../` to pass through unchanged. When the filename is constructed via string concatenation in

f"{timestamp}_{clean_title}.{file_format}"

malicious path sequences are preserved, enabling attackers to write files outside the designated report directory.

An attacker can manipulate the LLM to call the tool with a specific `file_format` to overwrite critical system files like `__init__.py`, potentially leading to remote code execution.