XSS in Jupyter Server
CVE-2023-40170
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.
EPSS: 0.006 (47.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.
Affected products
- Jupyter Jupyter_server
- Jupyter-server Jupyter_server — versions < 2.7.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com
- security-advisories@github.com
Frequently asked questions
- What is CVE-2023-40170?
- CVE-2023-40170 is a medium-severity vulnerability in Jupyter Server, classified under Improper Access Control. CVSS score: 4.6/10. Published 2023-08-28.
- How severe is CVE-2023-40170?
- Medium severity. CVSS v3 base score is 4.6 out of 10.