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Back to active CVEs
Critical · CVSS 10.0CVE-2024-39700GHSA-45GQ-V5WM-82WG

Remote Code Execution (RCE) vulnerability in jupyterlab extension template `update-integration-tests` GitHub ActionCVE-2024-39700

Answer in brief

CVE-2024-39700 records a Critical severity (CVSS 10.0) vulnerability in Remote Code Execution (RCE) vulnerability in jupyterlab extension template `update-integration-tests` GitHub Action. The current sources do not mark it as known exploited. The current feed maps jupyterlab/extension-template (generic), jupyter/extension-template (generic), jupyterlab (pypi). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 16, 2024Updated Nov 3, 2026Source checked Nov 3, 2026First seen by HOL Aug 8, 2026Material review Nov 3, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 10.0
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 10.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps jupyterlab/extension-template (generic), jupyter/extension-template (generic), jupyterlab (pypi). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
jupyterlab/extension-templategeneric<4.3.34.3.3
jupyter/extension-templategeneric>=0 <4.3.34.3.3
jupyterlabpypi>=0 <4.3.04.3.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for jupyterlab/extension-template, jupyter/extension-template, jupyterlab.
  2. 2Review the reported fix. Update jupyterlab/extension-template to 4.3.3; jupyter/extension-template to 4.3.3; jupyterlab to 4.3.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jul 16, 2024

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 8, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

JupyterLab extension template is a `copier` template for JupyterLab extensions. Repositories created using this template with `test` option include `update-integration-tests.yml` workflow which has an RCE vulnerability. Extension authors hosting their code on GitHub are urged to upgrade the template to the latest version. Users who made changes to `update-integration-tests.yml`, accept overwriting of this file and re-apply your changes later. Users may wish to temporarily disable GitHub Actions while working on the upgrade. We recommend rebasing all open pull requests from untrusted users as actions may run using the version from the `main` branch at the time when the pull request was created. Users who are upgrading from template version prior to 4.3.0 may wish to leave out proposed changes to the release workflow for now as it requires additional configuration.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
RCE
EPSS
Not reported
CWE IDs
CWE-94
Source
CVE List V5
Source checked
Nov 3, 2026
References
2 linked sources
Open source record