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CVE-2026-44727 Jupyter Server: Stored XSS in `NbconvertFileHandler` / `NbconvertPostHandler` via missing `sandbox` CSP

🗓️ 22 Jun 2026 19:56:56Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 38 Views

Stored XSS in Jupyter Server due to CSP sandbox omission in Nbconvert handlers; enables cookie access and RCE; fixed in 2.20.

Related
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Refs
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euvd
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6 Jul 202600:00
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Linux Distros Unpatched Vulnerability : CVE-2026-44727
24 Jun 202600:00
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Rows per page
[
  {
    "vendor": "jupyter-server",
    "product": "jupyter_server",
    "versions": [
      {
        "version": "< 2.20",
        "status": "affected"
      }
    ]
  }
]

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