VULNERABILITY INTELLIGENCE

CVE-2023-40170

CVSS score4.6 MEDIUM
EPSS probability0.62%
CISA KEVNot currently listed
Published2023-08-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-284
  • nvd@nist.gov: CWE-79

Primary references