OESA-2026-4167

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4167

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-4167.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-4167

Upstream

CVE-2026-73626

Published

2026-09-30T13:47:14Z

Modified

2026-10-01T02:00:03Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

python-jupyterlab security update

Details

JupyterLab is the next-generation user interface for Project Jupyter offering all the familiar building blocks of the classic Jupyter Notebook (notebook, terminal, text editor, file browser, rich outputs, etc.) in a flexible and powerful user interface.

Security Fix(es):

JupyterLab versions >=4.6.0,<=4.6.1 and <=4.5.9 contain an allowlist/blocklist enforcement gap in PyPIExtensionManager.install(). A missing 'await' caused the is_install_allowed coroutine to never execute, so the extension allowlist/blocklist check was not enforced for direct callers of install(). The stock JupyterLab HTTP API and Extension Manager UI are not affected, as they perform a separate, correctly awaited check. The issue affects only deployments where a custom extension or downstream integration imports PyPIExtensionManager and calls install() directly with a package name influenced by untrusted input, an allowlist/blocklist is configured, the PyPI Extension Manager is enabled, and kernels and terminals are disabled or delegated to remote hosts. Fixed in JupyterLab 4.6.2 and 4.5.10.(CVE-2026-73626)

Database specific

{
    "severity":  "High"
}

References

Affected packages

openEuler:24.03-LTS-SP3 / python-jupyterlab

Package

Name: python-jupyterlab
Purl: pkg:rpm/openEuler/python-jupyterlab&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

4.3.5-5.oe2403sp3

Ecosystem specific

{
    "noarch":  [
        "python3-jupyterlab-4.3.5-5.oe2403sp3.noarch.rpm"
    ],
    "src":  [
        "python-jupyterlab-4.3.5-5.oe2403sp3.src.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-4167.json"