GHSA-64x5-55rw-9974

cross-site inclusion (XSSI) of files in jupyter-server

Source: GitHub Advisory Database (reviewed) Moderate CVE-2023-40170

Packages

Ecosystem	Package	Affected	Fixed in
PyPI	jupyter-server	< 2.7.2	2.7.2

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact Improper cross-site credential checks on `/files/` URLs could allow exposure of certain file contents, or accessing files when opening untrusted files via "Open image in new tab". ### Patches Jupyter Server 2.7.2 ### Workarounds Use lower performance `--ContentsManager.files_handler_class=jupyter_server.files.handlers.FilesHandler`, which implements the correct checks. ### References Upstream patch for CVE-2019-9644 was not applied completely, leaving part of the vulnerability open. Vulnerability reported by Tim Coen via the [bug bounty program](https://app.intigriti.com/programs/jupyter/jupyter/detail) [sponsored by the European Commission](https://commission.europa.eu/news/european-commissions-open-source-programme-office-starts-bug-bounties-2022-01-19_en) and hosted on the [Intigriti platform](https://www.intigriti.com/).

References

External links from the advisory. They lead to third-party sites.