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CVE-2026-67338

JupyterLab before 4.5.9 Stored XSS via Extension Manager PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
jupyterlab / jupyterlabaffected 0 before 4.5.9; unaffected 4.5.9

CWE

CWE-84

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.