DEBIAN-CVE-2026-73416

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Source

https://security-tracker.debian.org/tracker/CVE-2026-73416

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73416.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-73416

Upstream

CVE-2026-73416

Published

2026-08-13T22:17:25Z

Modified

2026-09-19T22:47:39Z

Severity

6.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Summary

[none]

Details

jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.5.0 until 4.5.10 and 4.6.2, in jupyterlab/extensions/manager.py and jupyterlab/extensions/pypi.py, JupyterLab's PyPI extension manager enforces blocked_extensions_uris by comparing requested install names to blocklist entries with custom normalization that is weaker than PyPI package-name canonicalization. An authenticated user can request a PyPI-equivalent spelling such as JupyterLab.Git for a blocklisted package such as jupyterlab-git, and JupyterLab accepts the install request even though pip resolves the variant to the same package. Security impact requires an allowlist or blocklist intended to restrict package installation, the PyPI Extension Manager, and kernels and terminals that are disabled or delegated to remote hosts. The bypass lets an authenticated user install a prohibited extension, defeat integrity restrictions, and affect availability without gaining new read access. This issue is fixed in versions 4.5.10 and 4.6.2.

References

https://security-tracker.debian.org/tracker/CVE-2026-73416

Affected packages

Debian:13 / jupyterlab

Package

Name: jupyterlab
Purl: pkg:deb/debian/jupyterlab?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.0.11+ds1+~cs11.25.27-7

4.0.11+ds1+~cs11.25.27-8

4.0.11+ds1+~cs11.25.27-9

4.0.11+ds2+~cs11.25.27-1

4.0.11+ds2+~cs11.25.27-3

4.0.11+ds3+~cs11.25.27-1

4.0.11+ds4+~cs11.25.27-1

4.0.11+ds4+~cs11.25.27-2

4.0.11+ds4+~cs11.25.27-3

4.0.11+ds4+~cs11.25.27-4

4.0.11+ds5+~cs11.25.27-1

4.0.13+ds1+~2.0.1+~cs1.4.4-1

4.1.3+ds1+~2.0.1+~0.15.3+~cs1.4.4-1

4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-1

4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-2

4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-3

4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-4

4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-5

4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-6

4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-7

4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-8

4.4.1+ds1+~3.0.5+~0.16.6+~cs1.4.4-1

4.4.8+ds1+~3.1.0+~0.16.6+~cs1.4.4-1

4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-1

4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-2

4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3

4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4

4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-5

4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-6

Ecosystem specific

{
    "urgency":  "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73416.json"

Debian:14 / jupyterlab