CVE-2026-7810: Python Notebook Path Traversal Exposes Servers

The National Vulnerability Database (NVD) has detailed CVE-2026-7810, a high-severity path traversal vulnerability (CVSS 7.3) in UsamaK98’s python-notebook-mcp up to commit a05a232815809a7e425b5fa7be26e0d4369894c2. The flaw resides within the create_notebook, read_notebook, edit_cell, and add_cell functions of the server.py file. This vulnerability allows for remote exploitation, and an exploit has already been published, making it an immediate threat.

The critical aspect here is the path traversal, a classic vulnerability that allows attackers to access, read, or write to arbitrary files and directories outside of the intended web root. For a server-side application like a notebook manager, this means an attacker could potentially read sensitive configuration files, modify application logic, or even achieve remote code execution by uploading malicious files to critical system paths. The NVD notes that the project utilizes a rolling release model, meaning no specific affected or patched versions are available, complicating patch management. Furthermore, the project has not yet responded to the issue report.

This is a critical blind spot for defenders. The lack of versioning combined with an unpatched, publicly exploited vulnerability means any deployment of this specific Python notebook project is at significant risk. Attackers thrive on these situations — low-hanging fruit with clear exploitation paths. CISOs need to assume compromise if this component is in their environment and act decisively.