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CVE-2026-86049 Jupyter Server: 5xx request logging leaks token-bearing Referer header values

🗓️ 17 Sep 2026 20:28:52Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

Jupyter Server is the backend for Jupyter web applications. Prior to version 2.21.0, the 5xx request logging path in jupyter_server/log.py copies the Referer header into a JSON header block without applying the token scrubbing used for the request...

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17 Sep 2026 20:28Current
CVSS 3.17.1
5