CVE-2018-8768 Jupyter Notebook file bypasses sanitization, executes JavaScript

What is CVE-2018-8768?

CVE-2018-8768 is a high-severity cross-site scripting vulnerability in n/a, published on 18 Mar 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

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.

Which versions are affected by CVE-2018-8768?

3 open source packages ship an affected version, including notebook. It affects 1 product.

Products include Jupyter Notebook.

How do I fix CVE-2018-8768?

Upgrade notebook to 5.4.1 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2018-8768 being exploited?

There is no known exploitation of CVE-2018-8768 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2021-32798 Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) in notebook Critical 10.0
• CVE-2022-24758 Insertion of Sensitive Information into Log File affects Jupyter Notebook High 7.5
• CVE-2019-10856 Jupyter Notebook open redirect vulnerability Medium 6.1
• CVE-2018-19351 Jupyter Notebook XSS via untrusted notebooks Medium 6.1
• CVE-2018-19352 Jupyter Notebook XSS via directory name Medium 6.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-8768, GHSA-6cwv-x26c-w2q4, MGASA-2018-0182, PYSEC-2018-57, UBUNTU-CVE-2018-8768, USN-4855-1.