DEBIAN-CVE-2026-73626

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Source
https://security-tracker.debian.org/tracker/CVE-2026-73626
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73626.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-73626
Upstream
Published
2026-08-13T12:17:27Z
Modified
2026-09-10T09:00:57Z
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
[none]
Details

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.

References

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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73626.json"

Debian:14 / jupyterlab

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4

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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73626.json"