JupyterLab vulnerable to SXSS in Markdown Preview
Medium6.5CVE-2024-22420 · Published Jan 19, 2024 · updated Sep 10, 2026
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| jupyterlab PyPI | >= 4.0.0, < 4.0.11 | 4.0.11 |
| notebook PyPI | >= 7.0.0, < 7.0.7 | 7.0.7 |
Details and references
### Impact The vulnerability depends on user interaction by opening a malicious notebook with Markdown cells, or Markdown file using JupyterLab preview feature. A malicious user can access any data that the attacked user has access to as well as perform arbitrary requests acting as the attacked user. ### Patches JupyterLab v4.0.11 was patched. ### Workarounds Users can either disable the table of contents extension by running: ```bash jupyter labextension disable @jupyterlab/toc-extension:registry ``` ### References Vulnerability reported via the [bug bounty program](https://app.intigriti.com/programs/jupyter/jupyter/detail) [sponsored by the European Commission](https://commission.europa.eu/news/european-commissions-open-source-programme-office-starts-bug-bounties-2022-01-19_en) and hosted on the [Intigriti platform](https://www.intigriti.com/).
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-79
- Also known as
- BIT-jupyter-base-notebook-2024-22420, BIT-jupyter-notebook-2024-22420, BIT-jupyterlab-2024-22420, CVE-2024-22420, PYSEC-2026-1707, PYSEC-2026-2535
- github.com/jupyterlab/jupyterlab/security/advisories/GHSA-4m77-cmpx-vjc4
- nvd.nist.gov/vuln/detail/CVE-2024-22420
- github.com/jupyterlab/jupyterlab/commit/dda0033cd49449572d077bbecd33b18d8d05f48a
- github.com/jupyterlab/jupyterlab/commit/e1b3aabab603878e46add445a3114e838411d2df
- github.com/jupyterlab/jupyterlab
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UQJKNRDRFMKGVRIYNNN6CKMNJDNYWO2H
More Jupyter advisories
All Jupyter| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jan 192024 | JupyterLab vulnerable to potential authentication and CSRF tokens leak CVE-2024-22421High7.6fixed in 3.6.7, 4.0.11, 7.0.7 | High7.6 | 3.6.7, 4.0.11, 7.0.7 |
| Dec 52023 | jupyter-server errors include tracebacks with path information CVE-2023-49080Medium4.3fixed in 2.11.2 | Medium4.3 | 2.11.2 |
| Mar 282024 | Cross site scripting (XSS) in JupyterHub via Self-XSS leveraged by Cookie Tossing CVE-2024-28233High8.1fixed in 4.1.0 | High8.1 | 4.1.0 |
| Jun 62024 | Jupyter server on Windows discloses Windows user password hash CVE-2024-35178High7.5fixed in 2.14.1 | High7.5 | 2.14.1 |
| Aug 292023 | Open Redirect Vulnerability in jupyter-server CVE-2023-39968Medium6.1fixed in 2.7.2 | Medium6.1 | 2.7.2 |
| Aug 292023 | cross-site inclusion (XSSI) of files in jupyter-server CVE-2023-40170Medium4.6fixed in 2.7.2 | Medium4.6 | 2.7.2 |