XSS in Jupyter Notebook
CVE-2018-19351
Jupyter Notebook before 5.7.1 allows XSS via an untrusted notebook because nbconvert responses are considered to have the same origin as the notebook server. In other words, nbconvert endpoints can execute JavaScript with access to the server API. In notebook/nbconvert/handlers.py, NbconvertFileHandler and NbconvertPostHandler do not set a Content Security Policy to prevent this.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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: 0.015 (74.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- groups.google.com/forum/
- pypi.org/project/notebook/ (Third Party Advisory)
- github.com/jupyter/notebook/blob/master/docs/source/changelog.rst (Release Notes)
- github.com/jupyter/notebook/commit/107a89fce5f413fb5728c1c5d2c7788e1fb17491 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/11/msg00033.html (mailing-list)
Frequently asked questions
- What is CVE-2018-19351?
- CVE-2018-19351 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-2018-19351?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2018-19351 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.