CVE-2023-39968: Open Redirect Vulnerability in jupyter-server

CVE-2023-39968 · Severity: low · CVSS 3.1 · Published 2023-08-28

jupyter-server is the backend for Jupyter web applications. Open Redirect Vulnerability. Maliciously crafted login links to known Jupyter Servers can cause successful login or an already logged-in session to be redirected to arbitrary sites, which should be restricted to Jupyter Server-served URLs. This issue has been addressed in commit `29036259` which is included in release 2.7.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Technologies: jupyter-server (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2023-39968 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2023-39968 being exploited in the wild.
How severe is CVE-2023-39968?
Low severity, with a CVSS score of 3.1, published 28 August 2023.
Which products and versions are affected?
jupyter-server (PyPI) ECOSYSTEM:introduced=0,fixed=2.7.2, GIT:introduced=0,fixed=290362593b2ffb23c59f8114d76f77875de4b925|ECOSYSTEM:introduced=0,fixed=2.7.2.
Is there a fix for CVE-2023-39968?
Yes. jupyter-server (PyPI): upgrade to 2.7.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2023-39968?
Check whether you run jupyter-server (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

  • jupyter-server (PyPI): upgrade to 2.7.2 or later
    pip install "jupyter-server>=2.7.2"

Affected products

  • jupyter-server (PyPI) ECOSYSTEM:introduced=0,fixed=2.7.2, GIT:introduced=0,fixed=290362593b2ffb23c59f8114d76f77875de4b925|ECOSYSTEM:introduced=0,fixed=2.7.2

Identifiers

  • CVE-2023-39968
  • GHSA-r726-vmfq-j9j3
  • PYSEC-2023-155

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