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Response snapshot Nov 3, 2026, 22:26 UTC

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VulnerabilityCVE-2024-39700

JupyterLab extension template is a `copier` template for JupyterLab extensions.

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.

At a glance

Exploited
Not known
Severity
9.9 Critical (CVSS 3.1)
Chance of exploitation
Not estimated
Sources
2 independent sources

What to do

Check the vendor advisory for affected versions and fixes.

Read NVD CVE-2024-39700 (opens a new tab)

What happened

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.

Scores and how they were measured

CVSS base severity

9.9

Version 3.1As of

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    NVD CVE-2024-39700 (opens a new tab)

    NVD record: description, CVSS (the CNA score is preferred), affected products, and publication date. Not evidence of exploitation.

    Published Checked

  2. Primary source

    Vendor advisory (via NVD references) (opens a new tab)

    The vendor advisory referenced by the CVE record, for affected versions and fixes.

    Published Date not suppliedChecked

  3. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, November 3). JupyterLab extension template is a `copier` template for JupyterLab extensions. (CVE-2024-39700). https://kevwire.com/record/CVE-2024-39700

MLA

"JupyterLab extension template is a `copier` template for JupyterLab extensions. (CVE-2024-39700)." KEVWire, 3 Nov. 2026, kevwire.com/record/CVE-2024-39700.

Chicago

KEVWire. "JupyterLab extension template is a `copier` template for JupyterLab extensions. (CVE-2024-39700)." Last modified November 3, 2026. https://kevwire.com/record/CVE-2024-39700.

Evidence summary (plain text)

JupyterLab extension template is a  `copier` template for JupyterLab extensions. (Jul 16, 2024).
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.
CVSS 9.9 (version 3.1; evidence as of Nov 3, 2026; https://nvd.nist.gov/vuln/detail/CVE-2024-39700).
Sources:
NVD CVE-2024-39700: https://nvd.nist.gov/vuln/detail/CVE-2024-39700
Vendor advisory (via NVD references): https://github.com/jupyterlab/extension-template/security/advisories/GHSA-45gq-v5wm-82wg
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-11-03T20:56:06.501Z&lastModEndDate=2026-11-03T22:25:56.572Z&resultsPerPage=500&startIndex=0
Record ID: CVE-2024-39700.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Nov 3, 2026, 22:25 UTC. Ingestion is not an independent editorial investigation.

NVD status: Analyzed. Publication in the NVD is not evidence of exploitation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

Record JSON

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Record details

Record detail