How severe is GHSA-xm59-rqc7-hhvf?

No CVSS score has been assigned to GHSA-xm59-rqc7-hhvf yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-xm59-rqc7-hhvf?

GHSA-xm59-rqc7-hhvf affects the following packages: nbconvert (PyPI). Ecosystems affected: PyPI.

How do I fix GHSA-xm59-rqc7-hhvf?

Update nbconvert to 7.17.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xm59-rqc7-hhvf is resolved across your whole dependency graph.

How do I detect GHSA-xm59-rqc7-hhvf in my PyPI dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nbconvert, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-xm59-rqc7-hhvf if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-xm59-rqc7-hhvf?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-xm59-rqc7-hhvf can be triaged on real exposure rather than presence alone.

Is GHSA-xm59-rqc7-hhvf actively exploited in the wild?

No public exploit code has been indexed for GHSA-xm59-rqc7-hhvf yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-xm59-rqc7-hhvf?

GHSA-xm59-rqc7-hhvf has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 16th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-xm59-rqc7-hhvf?

GHSA-xm59-rqc7-hhvf is classified as CWE-427 (CWE-427). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-xm59-rqc7-hhvf published, and has it been updated?

GHSA-xm59-rqc7-hhvf was published on December 18, 2025 and was last updated on September 10, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍 PyPI

Not in CISA KEV

GHSA-xm59-rqc7-hhvf — nbconvert

Fix: jupyter/nbconvert@c9ac1d1

GHSA-xm59-rqc7-hhvf is a CWE-427 vulnerability in nbconvert. A fix is available for nbconvert — see the affected versions and patch details below.

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

Also known asCVE-2025-53000PYSEC-2026-1691

Published

Dec 18, 2025

Updated

Sep 10, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Sep 26, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA’s SSVC triage for GHSA-xm59-rqc7-hhvf.

EPSS Exploitation Probability

via FIRST.org ↗

0.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs16th percentile — riskier than 16% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected

🐍nbconvert

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

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, 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) 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.

Create a directory containing:
- A hidden bat file called inkscape.bat containing msg * "You've been hacked!"
- A dummy ipynb file called Machine_Learning.ipynb
Run the command jupyter nbconvert --to pdf Machine_Learning.ipynb.
Wait a few seconds, and you should see a popup showing the message "You've been hacked!"

Impact

All Windows users.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`nbconvert`	all versions	7.17.0`pip install --upgrade 'nbconvert==7.17.0'`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nbconvert, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update nbconvert to 7.17.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xm59-rqc7-hhvf is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-xm59-rqc7-hhvf can be triaged on real exposure rather than presence alone.

Tailored to GHSA-xm59-rqc7-hhvf. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### 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 maint

O3 Security · Impact-Aware SCA

Is GHSA-xm59-rqc7-hhvf in your dependencies?

O3 Security finds GHSA-xm59-rqc7-hhvf across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

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