# CVE-2018-8768: PYSEC-2018-57 - In Jupyter Notebook before 5.4.1, a maliciously forged notebook file can bypass sanitization to execute JavaScript in the notebook context.

Source: https://junglewise.ai/threats/cve-2018-8768-jupyter-notebook-file-bypasses-sanitization-executes-javascript  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2018-03-18  
License: CC BY 4.0 with a link back

CVE-2018-8768 · Severity: low · CVSS 3 · Published 2018-03-18

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.

Technologies: [notebook (PyPI)](https://junglewise.ai/threats/technologies/pypi-notebook). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2018-8768 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2018-8768 being exploited in the wild.

**How severe is CVE-2018-8768?** Low severity, with a CVSS score of 3, published 18 March 2018.

**Which products and versions are affected?** notebook (PyPI) ECOSYSTEM:introduced=0,fixed=5.4.1.

**Is there a fix for CVE-2018-8768?** Yes. notebook (PyPI): upgrade to 5.4.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2018-8768?** Check whether you run notebook (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- notebook (PyPI): upgrade to 5.4.1 or later

  ```sh
  pip install "notebook>=5.4.1"
  ```


## Affected products

- notebook (PyPI) ECOSYSTEM:introduced=0,fixed=5.4.1

## Identifiers

- CVE-2018-8768
- GHSA-6cwv-x26c-w2q4
- PYSEC-2018-57

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