Description
nbviewer through 1.0.1 contains a path traversal vulnerability in LocalFileHandler.can_show() that uses string-prefix comparison instead of proper path validation. Attackers can read files from sibling directories outside the configured root by requesting paths that share the root as a textual prefix, disclosing unintended notebooks and credentials.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
jupyter nbviewer
Default version status: unaffected
0 to ≤ 1.0.1affected
pkg:pypi/nbviewerReferences
- https://github.com/jupyter/nbviewer/issues/1115 ↗
- https://github.com/jupyter/nbviewer/blob/1.0.1/nbviewer/providers/local/handlers.py#L92-L107 ↗
- https://github.com/jupyter/nbviewer/commit/aad36106f72a1ca7721310c6fccc677ce4c744a5 ↗
- https://github.com/jupyter/nbviewer ↗
- https://www.vulncheck.com/advisories/nbviewer-through-1.0.1-path-traversal-via-localfilehandler ↗