Is there a public exploit for CVE-2024-39700?

Yes. Proof-of-concept code for CVE-2024-39700 has been published publicly.

Is there a proof of concept for CVE-2024-39700?

Yes — 2 proof-of-concept entries are linked on this page, from public repositories and community submissions. They are listed for authorised testing only.

How severe is CVE-2024-39700?

CVE-2024-39700 scores CVSS 10 (v3.1), rated critical. EPSS puts the chance of exploitation in the next 30 days at 1.09%.

What does CVE-2024-39700 affect?

CVE-2024-39700 affects jupyterlab extension-template.

10.0 Critical

JupyterLab extension template is a copier template for JupyterLab extensions.

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.

Proof-of-concept code is published

Public PoC

Public PoCLOURC0D3/CVE-2024-39700-PoC1 stars
Public PoCpvharmo2/gha-lab-0ba60e6456

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Assessment

CVSS: 10 (v3.1)
Severity: Critical
EPSS: 1.09% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Public PoC
Published: 16 July 2024
Last updated: 4 November 2026
Affected: jupyterlab · extension-template
Assigner: GitHub_M

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

At the source

EUVD (ENISA)

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

Submit a proof of concept

Only for publicly disclosed vulnerabilities, and only material from testing you were authorised to perform. This platform does not buy, sell, or broker exploits — see earning from vulnerability research for legitimate bounty programs. Submissions are reviewed before they appear. Text only; do not include live credentials, personal data, or anything targeting systems you are not permitted to test.

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Before you submit * This vulnerability is already publicly disclosed (it has a published CVE). This material comes only from testing I was authorised to perform. I have the legal right to publish this content and am not breaching any agreement by doing so. It contains no live credentials, personal data, or anything targeting systems I am not authorised to test. I understand it will be reviewed before it appears publicly and may be rejected. I agree to the submission terms.

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Query this programmatically

Agents can read this through the MCP endpoint, or over HTTP:

curl https://cve.zerocrew.in/api/cve/CVE-2024-39700