CVE Catalog

CVE-2026-61647

HighCVSS 7.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.32%

23th percentile - higher than 23% of all known CVEs

Summary

NotebookLM MCP, an MCP server and HTTP service for interacting with Google NotebookLM, versions 1.6.0 through 2.0.2, contains a path traversal vulnerability in the POST /batch-to-vault endpoint. Attacker-controlled vault_dir and slug_prefix values can cause Markdown and JSON files to be written outside the intended vault directory to any location writable by the server process.

Risk Assessment

An attacker can overwrite or create files on the system, potentially leading to data integrity compromise or further system compromise.

Recommendation

Update NotebookLM MCP to version 2.0.3, which contains the fix. If unable to upgrade, run the server as a dedicated unprivileged account, restrict to localhost, and validate vault_dir values.

Related vulnerabilities

Original NVD description (English source)

NotebookLM MCP is an MCP server and HTTP service for interacting with Google NotebookLM and exporting generated content to local vault directories. Versions 1.6.0 through 2.0.2 contain a path traversal vulnerability in the `POST /batch-to-vault` endpoint, also exposed through the `batch_to_vault` MCP tool beginning in version 1.7.0, because attacker-controlled `vault_dir` and `slug_prefix` values can cause Markdown and JSON files to be written outside the intended vault directory to any location writable by the server process. Version 2.0.3 sanitizes `slug_prefix` and supports vault containment when `NOTEBOOKLM_VAULT_ROOT` is configured; containment is not enabled if that variable is unset. Users unable to upgrade should run the server as a dedicated unprivileged account restricted to the intended vault, keep the HTTP endpoint limited to localhost, and validate `vault_dir` values supplied by LLMs processing untrusted content.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS