CVE-2018-19352: XSS Vulnerability in Jupyter Notebook
Summary
CVE-2018-19352: Jupyter Notebook XSS via directory name. Affects notebook versions < 5.7.2. Fixed in 5.7.2. How to fix ↓
Also tracked for
- jupyter-notebook · Debian:11
The same CVE-2018-19352 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
Jupyter Notebook is an open-source web application that allows users to create and share documents containing live code, equations, visualizations, and narrative text. It is widely used for data analysis, scientific research, and machine learning. Jupyter Notebook provides an interactive computing environment that supports various programming languages, including Python, R, and Julia. Unfortunately, Jupyter Notebook versions prior to 5.7.2 are susceptible to a moderate severity XSS vulnerability.
Vulnerability Detail
The XSS vulnerability in Jupyter Notebook (CVE-2018-19352) arises from the unsafe handling of certain URLs in the notebook/static/tree/js/notebooklist.js file. An attacker can exploit this vulnerability by crafting a malicious directory name. When a user accesses the affected directory, the malicious code is executed in the user's browser, potentially leading to unauthorized access, data theft, or other malicious activities. The vulnerability has a CVSS score of 6.1, indicating a moderate severity level.
How To Fix
Latest published version: 7.6.3 as of 22 Oct 2026
pip install --upgrade "notebook==7.6.3"Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
5.7.2
This is the first release that contains the fix.
pip install --upgrade "notebook==5.7.2"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a workaround, users can manually modify the affected file (notebook/static/tree/js/notebooklist.js) to implement proper URL handling and prevent XSS attacks. Here is an example of the modified code:
// Safe URL handling
function handleURL(url) {
var sanitizedURL = sanitizeURL(url);
// Handle the sanitized URL
}
// URL sanitization
function sanitizeURL(url) {
// Implement URL sanitization logic here
// Return the sanitized URL
}
Conclusion
In conclusion, the XSS vulnerability (CVE-2018-19352) in Jupyter Notebook poses a moderate security risk. It is crucial to upgrade to Jupyter Notebook version 5.7.2 or later to mitigate this vulnerability. Users can also implement a workaround by modifying the affected file, but upgrading to the latest version is strongly recommended. For further assistance or support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for notebook →
FAQ
Jupyter Notebook is an open-source web application that allows users to create and share documents containing live code, equations, visualizations, and narrative text. It is widely used for data analysis, scientific research, and machine learning.
Cross-Site Scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. This can lead to unauthorized access, data theft, or other malicious activities.
The XSS vulnerability in Jupyter Notebook can allow an attacker to execute arbitrary code in the user's browser, potentially leading to unauthorized access, data theft, or other malicious activities.
To fix this vulnerability, it is recommended to upgrade Jupyter Notebook to version 5.7.2 or later. This can be done by updating the package using the package manager or by following the installation instructions provided by the Jupyter Notebook project.
Yes, as a workaround, users can manually modify the affected file (notebook/static/tree/js/notebooklist.js) to implement proper URL handling and prevent XSS attacks. However, it is strongly recommended to upgrade to the latest version of Jupyter Notebook to ensure comprehensive security.
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