LangBot — Vulnerability (CVE-2025-59835)
Date: 2025-10
Attack vector: path-traversal
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2025-59835
CWE: CWE-23
CWE-434

LangBot is a global IM bot platform designed for LLMs. In versions 4.1.0 up to but not including 4.3.5, authorized attackers can exploit the /api/v1/files/documents interface to perform arbitrary file uploads. Since this interface does not strictly restrict the storage directory of files on the server, it is possible to upload dangerous files to specific system directories. This is fixed in version 4.3.5.


Mitigations:

Architectural layers (MAESTRO):