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BREW-jupyterlab-CVE-2025-53000 — nbconvert has an uncontrolled search path that leads to unauthorized code execution on Windows

Affected: Homebrew: jupyterlab

### Summary

On Windows, converting a notebook containing SVG output to a PDF results in unauthorized code execution. Specifically, a third party can create a `inkscape.bat` file that defines a [Windows batch script](https://en.wikipedia.org/wiki/Batch_file), capable of arbitrary code execution.

When a user runs `jupyter nbconvert --to pdf` on a notebook containing SVG output to a PDF on a Windows platform from this directory, the `inkscape.bat` file is run unexpectedly.

### Details _Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer._

`nbconvert` searches for an `inkscape` executable when converting notebooks to PDFs here: https://github.com/jupyter/nbconvert/blob/4f61702f5c7524d8a3c4ac0d5fc33a6ac2fa36a7/nbconvert/preprocessors/svg2pdf.py#L104

The MITRE page on [CWE-427 (Uncontrolled Search Path Element)](https://cwe.mitre.org/data/definitions/427.html) summarizes the root cause succinctly:

> In Windows-based systems, when the `LoadLibrary` or `LoadLibraryEx` function is called with a DLL name that does not contain a fully qualified path, the function follows a search order that includes two path elements that might be uncontrolled: > - the directory from which the program has been loaded > - the current working directory

### PoC

_Complete instructions, including specific configuration details, to reproduce the vulnerability._

1. Create a directory containing:

- A hidden bat file called `inkscape.…

CLEANSTART-2026-ZJ55298 — Security fix for CVE-2025-53000 applied in: tensorflow-gpu-jupyter 2.21.0-r6

Affected: CleanStart: tensorflow-gpu-jupyter

Security vulnerability affects the tensorflow-gpu-jupyter package. This issue is resolved in later releases. See references for vulnerability details.

EUVD-2026-268819

fkie_cve-2025-53000

The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. Versions of nbconvert up to and including 7.16.6 on Windows have a vulnerability in which converting a notebook containing SVG output to a PDF results in unauthorized code execution. Specifically, a third party can create a `inkscape.bat` file that defines a Windows batch script, capable of arbitrary code execution. When a user runs `jupyter nbconvert --to pdf` on a notebook containing SVG output to a PDF on a Windows platform from this directory, the `inkscape.bat` file is run unexpectedly. This issue has been patched in version 7.17.0.

GHSA-xm59-rqc7-hhvf — nbconvert has an uncontrolled search path that leads to unauthorized code execution on Windows

Affected: PyPI: nbconvert

### Summary

When a user runs `jupyter nbconvert --to pdf` on a notebook containing SVG output to a PDF on a Windows platform from this directory, the `inkscape.bat` file is run unexpectedly.

### Details _Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer._

The MITRE page on [CWE-427 (Uncontrolled Search Path Element)](https://cwe.mitre.org/data/definitions/427.html) summarizes the root cause succinctly:

### PoC

_Complete instructions, including specific configuration details, to reproduce the vulnerability._

1. Create a directory containing:

- A hidden bat file called `inkscape.…

openSUSE-SU-2026:10603-1 — jupyter-nbconvert-7.17.1-1.1 on GA media

jupyter-nbconvert-7.17.1-1.1 on GA media

PYSEC-2026-1691 — nbconvert has an uncontrolled search path that leads to unauthorized code execution on Windows

Affected: PyPI: nbconvert

### Summary

When a user runs `jupyter nbconvert --to pdf` on a notebook containing SVG output to a PDF on a Windows platform from this directory, the `inkscape.bat` file is run unexpectedly.

### Details _Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer._

The MITRE page on [CWE-427 (Uncontrolled Search Path Element)](https://cwe.mitre.org/data/definitions/427.html) summarizes the root cause succinctly:

### PoC

_Complete instructions, including specific configuration details, to reproduce the vulnerability._

1. Create a directory containing:

- A hidden bat file called `inkscape.…

UBUNTU-CVE-2025-53000

Affected: Ubuntu:18.04:LTS: nbconvert, Ubuntu:20.04:LTS: nbconvert, Ubuntu:22.04:LTS: nbconvert, Ubuntu:24.04:LTS: nbconvert, Ubuntu:25.10: nbconvert, Ubuntu:26.04:LTS: nbconvert