# nbconvert (PyPI) vulnerabilities

6 known vulnerabilities (3 high, 3 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 7.17.2 (Oct 12, 2026): no advisory affects it
- Newest unaffected release: 7.17.2 (Oct 12, 2026), the latest release
- Weekly downloads: 14.2M
- Dependents: 6,151
- Releases: 104 since 4.0.0 (Jul 12, 2015)
- Registry: https://pypi.org/project/nbconvert/
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-114140: 5.4.0 to 7.17.1 (7.17.2 is outside it)
- CVE-2026-6658: 4.0.0 to 7.17.0 (7.17.1 is outside it)
- CVE-2026-39378: 6.5.0 to 7.17.0 (7.17.1 is outside it)
- CVE-2026-39377: 6.5.0 to 7.17.0 (7.17.1 is outside it)
- CVE-2025-53000: 4.0.0 to 7.16.6 (7.17.0 is outside it)
- CVE-2021-32862: 4.0.0 to 6.5.0 (6.5.1 is outside it)

## Advisories (6)

### [CVE-2026-114140](https://cve.now/CVE-2026-114140): nbconvert: File write via path traversal in cell output filenames

- Severity: High 8.8
- Published: Oct 21, 2026
- Affected: from 5.4.0, fixed in 7.17.2.
- Fixed in 7.17.2 (released Oct 12, 2026, 9 days before disclosure).
- The latest release, 7.17.2, is not affected.

### [CVE-2026-6658](https://cve.now/CVE-2026-6658): Cross-site Scripting (XSS) in jupyter/nbconvert

- Severity: Medium 5.4
- Published: Jun 26, 2026
- Affected: through 7.17.0.
- Fixed in 7.17.1 (released Apr 8, 2026, 79 days before disclosure), the first release outside every affected range (no listed fixed version clears them all).
- The latest release, 7.17.2, is not affected.

### [CVE-2026-39378](https://cve.now/CVE-2026-39378): nbconvert has an Arbitrary File Read via Path Traversal in HTMLExporter Image Embedding

- Severity: Medium 6.5
- Published: Apr 21, 2026
- Affected: from 6.5.0, fixed in 7.17.1.
- Fixed in 7.17.1 (released Apr 8, 2026, 13 days before disclosure).
- The latest release, 7.17.2, is not affected.

### [CVE-2026-39377](https://cve.now/CVE-2026-39377): nbconvert has an Arbitrary File Write via Path Traversal in Cell Attachment Filenames

- Severity: Medium 6.5
- Published: Apr 21, 2026
- Affected: from 6.5.0, fixed in 7.17.1.
- Fixed in 7.17.1 (released Apr 8, 2026, 13 days before disclosure).
- The latest release, 7.17.2, is not affected.

### [CVE-2025-53000](https://cve.now/CVE-2025-53000): nbconvert has an uncontrolled search path that leads to unauthorized code execution on Windows

- Severity: High 8.5
- Published: Dec 17, 2025
- Affected: fixed in 7.17.0.
- Fixed in 7.17.0 (released Jan 29, 2026, 43 days after disclosure).
- The latest release, 7.17.2, is not affected.

### [CVE-2021-32862](https://cve.now/CVE-2021-32862): nbconvert vulnerable to cross-site scripting (XSS) via multiple exploit paths

- Severity: High 7.5
- Published: Aug 18, 2022
- Affected: fixed in 6.3.0a0; fixed in 6.5.1.
- Fixed in 6.5.1 (released Aug 9, 2022, 9 days before disclosure).
- The latest release, 7.17.2, is not affected.

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/packages/pypi/nbconvert
Site guide for agents: https://cve.now/llms.txt
Uses NVD data; not endorsed by NVD.