{"id":"EUVD-2026-84173","revision":null,"records":[{"revision":"36ceb1b152f043b0949f1aca99e5cf9f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-61647","aliases":[],"title":"@roomi-fields/notebooklm-mcp has path traversal in vault.batch tool that allows arbitrary file write outside intended vault directory","description":"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.","state":0,"publishedAt":"2026-09-21T21:00:58.673+00:00","modifiedAt":"2026-09-22T15:38:52.069+00:00","affected":[{"ecosystem":"Vendor product","name":"notebooklm-mcp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"roomi-fields\",\n                    \"product\": \"notebooklm-mcp\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.6.0, < 2.0.3\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":7.1,"severity":"HIGH"}],"references":["https://github.com/roomi-fields/notebooklm-mcp/security/advisories/GHSA-jjhp-8crj-mppq"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-61647","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-61647","identifiers":["CVE-2026-61647"]},"retained":false,"historicalAffected":[]},{"revision":"41f10cb8f15948069b12bd3851b363b8","observedAt":"2026-11-11T15:02:52.705+00:00","statement":{"source":"euvd","id":"EUVD-2026-84173","aliases":["CVE-2026-61647","GHSA-jjhp-8crj-mppq"],"title":"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-v…","description":"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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"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","score":7.1,"severity":null}],"references":["https://github.com/roomi-fields/notebooklm-mcp/security/advisories/GHSA-jjhp-8crj-mppq"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-84173","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 21, 2026, 9:00:58 PM","dateUpdated":"Sep 22, 2026, 3:38:52 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. 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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.","state":0,"publishedAt":"2026-09-21T21:17:07.107+00:00","modifiedAt":"2026-09-24T21:25:27.05+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":7.1,"severity":"HIGH"}],"references":["https://github.com/roomi-fields/notebooklm-mcp/security/advisories/GHSA-jjhp-8crj-mppq"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-61647","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-22","CWE-73"],"productCriteria":[],"sourceDates":{"published":"2026-09-21T21:17:07.107","lastModified":"2026-09-24T21:25:27.050"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-61647","identifiers":["CVE-2026-61647"]},"retained":false,"historicalAffected":[]},{"revision":"6b759b10a4304e0ba6baf657e717ddaa","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-jjhp-8crj-mppq","aliases":["CVE-2026-61647"],"title":"@roomi-fields/notebooklm-mcp has a path traversal in vault.batch tool that allows arbitrary file write outside intended vault directory","description":"## Summary\n\nThe `vault_batch` MCP tool (and the equivalent `POST /batch-to-vault` HTTP endpoint) accepted a caller-supplied `vault_dir` path that was passed directly to `path.resolve()` + `fs.mkdir()` with no containment check. A caller — or a prompt-injected LLM driving the MCP — could therefore create directories and write `.md` / `.json` answer files anywhere the server process can write.\n\nThe `slug_prefix` parameter had a parallel, smaller traversal vector: it was concatenated into the filename without sanitization, so a prefix containing `/` or `..` could escape the resolved vault directory through the filename component.\n\n## Impact\n\nFile write (markdown + JSON sidecars) to any location writable by the server process. The written files are inert content (no code execution by themselves), but in a multi-user context — or when the MCP server is driven by an LLM that has read untrusted content (prompt injection) — this allows an attacker to plant files in sensitive locations (autostart folders, shell startup files, etc.) for downstream exploitation.\n\nThe vulnerability exists from **v1.6.0** (when the HTTP `/batch-to-vault` endpoint was introduced) and v1.7.0 (when the same logic was exposed as the `batch_to_vault` MCP tool) through **v2.0.2**.\n\n## Patch\n\nFixed in **v2.0.3**:\n\n- **Opt-in containment via `NOTEBOOKLM_VAULT_ROOT` env var.** When set, `vault_dir` is resolved relative to that root and `realpath`-based containment is enforced. Absolute paths or `..` segments outside the root are rejected with a clear error.\n- **`slug_prefix` is always sanitized.** Path separators (`/`, `\\`), `..` sequences and NUL bytes are stripped, length capped at 64 characters. This applies regardless of whether `NOTEBOOKLM_VAULT_ROOT` is set.\n- 15 unit tests in `src/__tests__/vault-writer.test.ts` cover the escape vectors (absolute paths, sibling-prefix attacks, `..` traversal, NUL/separator stripping).\n\n## Workarounds for users who cannot upgrade\n\n- Run the MCP server under a dedicated unprivileged user with write access only to the intended vault directory.\n- Do not expose the HTTP `/batch-to-vault` endpoint beyond localhost.\n- If using an LLM that ingests untrusted content, validate any `vault_dir` arguments before forwarding them to the MCP.\n\n## Configuration requirement after upgrade (important)\n\nv2.0.3 preserves the legacy unrestricted behaviour when `NOTEBOOKLM_VAULT_ROOT` is **unset**, to keep existing single-user local setups working. **To enable containment, set `NOTEBOOKLM_VAULT_ROOT` in the server environment** to a directory that should bound all vault writes.\n\n## Credit\n\nReported by @mcfly-zzh — thanks for the careful diagnosis and follow-up verification.","state":0,"publishedAt":"2026-09-22T14:43:26+00:00","modifiedAt":"2026-09-22T15:00:48.9056687+00:00","affected":[{"ecosystem":"npm","name":"@roomi-fields/notebooklm-mcp","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"1.6.0"},{"kind":"fixed","version":"2.0.3"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"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","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/roomi-fields/notebooklm-mcp/security/advisories/GHSA-jjhp-8crj-mppq","https://nvd.nist.gov/vuln/detail/CVE-2026-61647","https://github.com/roomi-fields/notebooklm-mcp/issues/15","https://github.com/roomi-fields/notebooklm-mcp/commit/13828d9ff3933839ce14c1797d3b20a6bb7694a6","https://github.com/roomi-fields/notebooklm-mcp","https://github.com/roomi-fields/notebooklm-mcp/releases/tag/v2.0.3"],"sourceUrl":"https://github.com/advisories/GHSA-jjhp-8crj-mppq","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-jjhp-8crj-mppq","identifiers":["GHSA-jjhp-8crj-mppq","CVE-2026-61647"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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