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JupyterLab has an Extension Manager API/GUI Policy Discrepancy, allowing 3rd party (malicious) extensions install via POST request

🗓️ 05 May 2026 20:53:18Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 10 Views

Policy gap in JupyterHub Extension Manager allows unapproved extensions; patch in JupyterLab 4.5.7.

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21 May 2026 00:41Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.8
EPSS0.00029
SSVC
10