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High

Jupyter Notebook file bypasses sanitization, executes JavaScript

  • Disclosed: 18.03.2018
  • Updated: 11.10.2026 12:19

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.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) notebook < 5.4.1 5.4.1

References

CVSS score 7.8/10
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE)
-
Platform
Python (PyPI)
Package
notebook
Disclosed
18.03.2018
Updated
11.10.2026 12:19

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2018-57 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-6cwv-x26c-w2q4 - CC BY 4.0

Vulnerability history: notebook

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (21) in the archive
Total entries
21
First → latest
09.2015 10.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 8
  • Medium 11
  • Low 1

Disclosures per year

earlier: 2

Severity:
  1. JupyterLab: Cross-site scripting (XSS) in JupyterLab via notebook cells pasted from the system clipboard
    High · 8.1 CVE-2026-102831 >= 7.5.0, < 7.6.3 7.6.3
  2. JupyterLab's command linker attributes in HTML enable one-click command execution from untrusted content
    High · 9.6 CVE-2026-42557 >= 7.0.0, < 7.5.6 7.5.6
  3. Jupyter Notebook Vulnerable to Authentication Token Theft via CommandLinker XSS
    High CVE-2026-40171 >= 7.0.0, < 7.5.6 7.5.6
  4. HTML injection in Jupyter Notebook and JupyterLab leading to DOM Clobbering
    High · 7.6 CVE-2024-43805 >= 7.0.0, < 7.2.2 7.2.2
  5. JupyterLab vulnerable to potential authentication and CSRF tokens leak
    High · 7.6 CVE-2024-22421 >= 7.0.0, < 7.0.7 7.0.7
  6. The Jupyter notebook is a web-based notebook environment for interactive computing. Prior to version 6.4.9, unauthorized actors can access sensitive information from server logs. Anytime a 5xx error i
    High · 7.5 CVE-2022-24758 < 6.4.10 6.4.10
  7. Special Element Injection in notebook
    High · 10.0 CVE-2021-32798 < 5.7.11, >= 6.0.0, < 6.4.1 5.7.11, 6.4.1
  8. Jupyter Notebook file bypasses sanitization, executes JavaScript this entry
    High · 7.8 CVE-2018-8768 < 5.4.1 5.4.1
  9. Improper Input Validation in Jupyter Notebook
    Critical · 9.8 CVE-2015-7337 >= 4.0.0, < 4.0.5 4.0.5

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