CVE-2026-67338

CVE-2026-67338CVE-2026-67338

Description

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.

Scoring

CVSS 6.1 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Last modified2026-08-01
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.