UBUNTU-CVE-2026-67338

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Source
https://ubuntu.com/security/CVE-2026-67338
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67338.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-67338
Upstream
Published
2026-08-01T13:17:00Z
Modified
2026-08-06T00:23:23Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

JupyterLab before 4.5.9 contains a stored cross-site scripting vulnerability in the Extension Manager that fails to validate URI protocols in package metadata URLs. Attackers can publish malicious PyPI packages with javascript: URLs in project metadata that execute arbitrary JavaScript in the JupyterLab origin when users click the extension name.

References

Affected packages

Ubuntu:26.04:LTS / jupyterlab

Package

Name
jupyterlab
Purl
pkg:deb/ubuntu/jupyterlab?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown 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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.0.11+ds1+~cs11.25.27-9",
            "binary_name": "jupyterlab"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67338.json"