Arbitrary Argument Injection Affecting jupyterlab package, versions [4.0.0,4.5.11)[4.6.0,4.6.4)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-JUPYTERLAB-20335547
- published30 Sept 2026
- disclosed29 Sept 2026
- creditRex Liu, Michał Krassowski
Introduced: 29 Sep 2026
NewCVE-2026-102904 (opens in a new tab)How to fix?
Upgrade jupyterlab to version 4.5.11, 4.6.4 or higher.
Overview
jupyterlab is a JupyterLab computational environment.
Affected versions of this package are vulnerable to Arbitrary Argument Injection via the uninstall function in jupyterlab/extensions/pypi.py, where extension names passed to the uninstall endpoint are not validated before being forwarded to pip uninstall as command-line arguments. An authenticated attacker can supply a malformed or adversarial extension name that is interpreted as a pip flag or option, allowing unintended pip behavior to be triggered through the extension manager API.
Note: This is only exploitable when the PyPI Extension Manager is enabled and kernels and terminals are disabled or delegated to remote hosts, otherwise a user with kernel access can already read files and make outbound requests directly.