jupyter server vulnerabilities and fixes

Recent CVEs affecting jupyter server, with upgrade or downgrade steps. 1 tracked.

Also searched as: jupyterserver.

jupyter server has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-06-22. Highest priority: CVE-2026-44727 (score 28/100).

• CVE-2026-44727 MEDIUM 5.4 UPGRADE Jupyter Server is the backend for Jupyter web applications

FAQ

How do I fix jupyter server vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is jupyter server being exploited right now?

None of the tracked jupyter server CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which jupyter server CVE should I patch first?

CVE-2026-44727 currently ranks highest (28/100): Jupyter Server is the backend for Jupyter web applications.

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