CVE-2025-53000: PYSEC-2026-1691 - nbconvert has an uncontrolled search path that leads to unauthorized code execution on Windows

CVE-2025-53000 · Severity: medium · CVSS 4 · Published 2026-07-07

nbconvert has an uncontrolled search path that leads to unauthorized code execution on Windows

Technologies: nbconvert (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-53000 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-53000 being exploited in the wild.
How severe is CVE-2025-53000?
Medium severity, with a CVSS score of 4, published 7 July 2026.
Which products and versions are affected?
nbconvert (PyPI) ECOSYSTEM:introduced=0,fixed=7.17.0.
Is there a fix for CVE-2025-53000?
Yes. nbconvert (PyPI): upgrade to 7.17.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-53000?
Check whether you run nbconvert (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

  • nbconvert (PyPI): upgrade to 7.17.0 or later
    pip install "nbconvert>=7.17.0"

Affected products

  • nbconvert (PyPI) ECOSYSTEM:introduced=0,fixed=7.17.0

Identifiers

  • CVE-2025-53000
  • GHSA-xm59-rqc7-hhvf
  • PYSEC-2026-1691

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