What is CVE-2018-8768?

CVE-2018-8768 is a high-severity vulnerability in Jupyter Notebook. CVSS score: 7.8/10. Published 2018-03-18.

How severe is CVE-2018-8768?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Jupyter Notebook

CVE-2018-8768

In Jupyter Notebook before 5.4.1, a maliciously forged notebook file can bypass sanitization to execute JavaScript in the notebook context. Specifically, invalid HTML is 'fixed' by jQuery after sanitization, making it dangerous.

Published 2018-03-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.3th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Jupyter Notebook

References

openwall.com/lists/oss-security/2018/03/15/2 (Mailing List, Third Party Advisory)
lists.debian.org/debian-lts-announce/2020/11/msg00033.html (mailing-list)

Frequently asked questions

What is CVE-2018-8768?: CVE-2018-8768 is a high-severity vulnerability in Jupyter Notebook. CVSS score: 7.8/10. Published 2018-03-18.
How severe is CVE-2018-8768?: High severity. CVSS v3 base score is 7.8 out of 10.