CVE-2018-19351

Name: CVE-2018-19351
Creator: NVD / NIST
Published: 2018-11-18T17:29:00.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.51%

Last modified Jun 17, 2026

CVE-2018-19351 is a vulnerability of currently unknown severity. 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. EPSS estimates a 1.51% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

1.51%

71.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Jupyter	Notebook	< 5.7.1

References

https://github.com/jupyter/notebook/blob/master/docs/source/changelog.rstRelease Notes
https://github.com/jupyter/notebook/commit/107a89fce5f413fb5728c1c5d2c7788e1fb17491Patch, Third Party Advisory
https://groups.google.com/forum/#%21topic/jupyter/hWzu2BSsplY
https://lists.debian.org/debian-lts-announce/2020/11/msg00033.html
https://pypi.org/project/notebook/#historyThird Party Advisory
https://github.com/jupyter/notebook/blob/master/docs/source/changelog.rstRelease Notes
https://github.com/jupyter/notebook/commit/107a89fce5f413fb5728c1c5d2c7788e1fb17491Patch, Third Party Advisory
https://groups.google.com/forum/#%21topic/jupyter/hWzu2BSsplY
https://lists.debian.org/debian-lts-announce/2020/11/msg00033.html
https://pypi.org/project/notebook/#historyThird Party Advisory

Timeline

Published: Nov 18, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-19351?

How severe is CVE-2018-19351?

Severity scoring for CVE-2018-19351 is pending analysis. The EPSS model estimates a 1.51% probability of exploitation in the next 30 days.

How do I fix CVE-2018-19351?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-19351?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST