jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.
Metrics
Affected Vendors & Products
References
History
Thu, 14 May 2026 14:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Jupyter
Jupyter jupyterlab |
|
| Vendors & Products |
Jupyter
Jupyter jupyterlab |
Wed, 13 May 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 13 May 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7. | |
| Title | jupyterlab: Extension Manager API/GUI Policy Discrepancy allowing 3rd party (malicious) extensions install via POST request. | |
| Weaknesses | CWE-602 CWE-88 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-14T03:56:38.179Z
Reserved: 2026-04-26T11:53:27.706Z
Link: CVE-2026-42266
Updated: 2026-05-13T15:28:48.878Z
Status : Undergoing Analysis
Published: 2026-05-13T16:16:47.017
Modified: 2026-05-13T16:32:31.457
Link: CVE-2026-42266
No data.
OpenCVE Enrichment
Updated: 2026-05-14T14:30:15Z