CVE-2020-26215: Open redirect in Jupyter Notebook

CVE-2020-26215 · Severity: low · CVSS 3.1 · Published 2020-11-18

Jupyter Notebook before version 6.1.5 has an Open redirect vulnerability. A maliciously crafted link to a notebook server could redirect the browser to a different website. All notebook servers are technically affected, however, these maliciously crafted links can only be reasonably made for known notebook server hosts. A link to your notebook server may appear safe, but ultimately redirect to a spoofed server on the public internet. The issue is patched in version 6.1.5.

Technologies: notebook (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2020-26215 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-26215 being exploited in the wild.
How severe is CVE-2020-26215?
Low severity, with a CVSS score of 3.1, published 18 November 2020.
Which products and versions are affected?
notebook (PyPI) ECOSYSTEM:introduced=0,fixed=6.1.5, GIT:introduced=0,fixed=3cec4bbe21756de9f0c4bccf18cf61d840314d74|ECOSYSTEM:introduced=0,fixed=6.1.5.
Is there a fix for CVE-2020-26215?
Yes. notebook (PyPI): upgrade to 6.1.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-26215?
Check whether you run notebook (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • notebook (PyPI): upgrade to 6.1.5 or later
    pip install "notebook>=6.1.5"

Affected products

  • notebook (PyPI) ECOSYSTEM:introduced=0,fixed=6.1.5, GIT:introduced=0,fixed=3cec4bbe21756de9f0c4bccf18cf61d840314d74|ECOSYSTEM:introduced=0,fixed=6.1.5

Identifiers

  • CVE-2020-26215
  • GHSA-c7vm-f5p4-8fqh
  • PYSEC-2020-215

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