CVE-2023-40170

MediumCVSS 6.1/10Last modified Jun 17, 2026

Description

jupyter-server is the backend for Jupyter web applications. 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". This issue has been addressed in commit `87a49272728` which has been included in release `2.7.2`. Users are advised to upgrade. Users unable to upgrade may use the lower performance `--ContentsManager.files_handler_class=jupyter_server.files.handlers.FilesHandler`, which implements the correct checks.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-284 CWE-306 CWE-79

Affected software

Vendor	Product	Versions
jupyter-server	jupyter_server	< 2.7.2

References

Timeline

Published: Aug 28, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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