What is CVE-2018-19352?

CVE-2018-19352 is a medium-severity vulnerability in Jupyter Notebook, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-11-18.

How severe is CVE-2018-19352?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2018-19352 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Jupyter Notebook

CVE-2018-19352

Jupyter Notebook before 5.7.2 allows XSS via a crafted directory name because notebook/static/tree/js/notebooklist.js handles certain URLs unsafely.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-11-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.013 (70.7th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Jupyter Notebook

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

github.com/jupyter/notebook/commit/288b73e1edbf527740e273fcc69b889460871648 (Patch, Third Party Advisory)
pypi.org/project/notebook/ (Release Notes)
github.com/jupyter/notebook/blob/master/docs/source/changelog.rst (Release Notes)

Frequently asked questions

What is CVE-2018-19352?: CVE-2018-19352 is a medium-severity vulnerability in Jupyter Notebook, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-11-18.
How severe is CVE-2018-19352?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2018-19352 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.