GHSA-v7gx-3h93-r9v6HighCVSS 5.9
nbviewer through 1.0.1 contains a path traversal vulnerability in LocalFileHandler.can_show()...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (7)
- https://nvd.nist.gov/vuln/detail/CVE-2026-86258
- https://github.com/jupyter/nbviewer/issues/1115
- https://github.com/jupyter/nbviewer/commit/aad36106f72a1ca7721310c6fccc677ce4c744a5
- https://github.com/jupyter/nbviewer
- https://github.com/jupyter/nbviewer/blob/1.0.1/nbviewer/providers/local/handlers.py#L92-L107
- https://www.vulncheck.com/advisories/nbviewer-through-1.0.1-path-traversal-via-localfilehandler
- https://github.com/advisories/GHSA-v7gx-3h93-r9v6