How severe is CVE-2024-39700?

CVE-2024-39700 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-39700 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-39700?

CVE-2024-39700 affects Jupyter Jupyterlab. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-39700?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-39700 have an EU (EUVD) identifier?

Yes. CVE-2024-39700 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38192.

When was CVE-2024-39700 published?

CVE-2024-39700 was published on 2024-07-16 and last updated on 2026-06-17.

CVE-2024-39700

CVE-2024-39700 is a critical-severity vulnerability in Jupyter Jupyterlab with a CVSS 3.x base score of 9.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38192
Weakness: CWE-94
Affected product: Jupyter Jupyterlab
Published: 2024-07-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-39700?: 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.
How severe is CVE-2024-39700?: CVE-2024-39700 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-39700 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-39700?: CVE-2024-39700 affects Jupyter Jupyterlab. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-39700?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-39700 have an EU (EUVD) identifier?: Yes. CVE-2024-39700 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38192.
When was CVE-2024-39700 published?: CVE-2024-39700 was published on 2024-07-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jupyter:jupyterlab:*:*:*:*:*:*:*:*

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