jupyterlab: JupyterLab before 4.5.9 contains a stored cross-site scripting vulnerability in the Extension Manager that fails to v...
CVE-2026-67338 is fixed in jupyterlab on 1 platform by DEBIAN-CVE-2026-67338 (version 4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4), released August 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| jupyterlab · Debian 14 | 4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4 | DEBIAN-CVE-2026-67338 | Aug 25, 2026 |
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