CVE-2026-18640

The NewNotebook API does not sufficiently sanitize its parameters allowing an authenticated user with NOTEBOOKEDIT permission to write the notebook record outside the org's data store directory. The file written must have an extension of ".json.db" but can otherwise overwrite other metadata files...

CVE-2026-18640

The CVE-2026-18640 entry concerns Velociraptor's NewNotebook API. The parameter handling flaw allows an authenticated user with NOTEBOOK_EDIT permission to write a notebook record outside the org’s data store directory. The written file must bear the .json.db extension, but the vulnerability can ...

CVE-2026-18640 Velociraptor directory traversal via the NewNotebook API

The NewNotebook API does not sufficiently sanitize its parameters allowing an authenticated user with NOTEBOOKEDIT permission to write the notebook record outside the org's data store directory. The file written must have an extension of ".json.db" but can otherwise overwrite other metadata files...