{"id":"CVE-2026-61647","summary":"@roomi-fields/notebooklm-mcp has path traversal in vault.batch tool that allows arbitrary file write outside intended vault directory","details":"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.","aliases":["GHSA-jjhp-8crj-mppq"],"modified":"2026-09-22T11:45:56.965823326Z","published":"2026-09-21T21:00:58.673Z","database_specific":{"cwe_ids":["CWE-22","CWE-73"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61647.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61647.json"},{"type":"ADVISORY","url":"https://github.com/roomi-fields/notebooklm-mcp/security/advisories/GHSA-jjhp-8crj-mppq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61647"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/roomi-fields/notebooklm-mcp","events":[{"introduced":"dbffbf6307bfb3c5a2fcbd19ef458569c8419059"},{"fixed":"13828d9ff3933839ce14c1797d3b20a6bb7694a6"}],"database_specific":{"extracted_events":[{"introduced":"1.6.0"},{"fixed":"2.0.3"}],"source":"AFFECTED_FIELD"}}],"versions":["v2.0.2","v2.0.1","v2.0.0","v1.7.9","v1.7.8","v1.7.7","v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v1.7.1","v1.7.0","v1.6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61647.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"}]}