Vendor
Jupyter vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 18 vulnerabilities in Jupyter: 0 in the last 7 days and 4 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-114140, was published on 21 October 2026. 3 vulnerabilities in the last four weeks, up from none in the four before. 3 technologies have a page of their own.
- Last 7 days
- 0
- Last 90 days
- 4
- Critical, all time
- 3
- Exploited in the wild
- 0
About Jupyter
A non-profit organization and open-source project created to develop open-source software, open standards, and services for interactive computing.
Jupyter technologies
Latest Jupyter vulnerabilities
- CVE-2026-114140: Jupyter nbconvert path traversal via output filename metadatahighCVSS 4EPSS 0.3%
- CVE-2026-114135: Jupyter Server authorization bypass in kernel gateway handlershighCVSS 8.8EPSS 0.4%
- CVE-2026-102832: JupyterLab command link trust prompt marks wrong documentmediumCVSS 4.2EPSS 0.1%
- CVE-2026-86258: Jupyter nbviewer path traversal in LocalFileHandlermediumCVSS 5.9EPSS 0.5%
- CVE-2026-44182: Jupyter Enterprise Gateway YAML injection in Kubernetes manifest renderingcriticalCVSS 4EPSS 0.6%
- CVE-2026-44181: Jupyter Enterprise Gateway SSTI in Kubernetes manifest renderingcriticalCVSS 10
- CVE-2026-44180: Jupyter Enterprise Gateway UID/GID restriction bypass in ContainerProcessProxycriticalCVSS 9.8EPSS 0.7%
- CVE-2026-6658: Jupyter nbconvert Cross-site Scripting in Mermaid HTML exportmediumCVSS 5.4EPSS 0.2%
- CVE-2026-6657: Jupyter Jupyter Server CORS bypass via improper origin validationmediumCVSS 6.1EPSS 0.3%
- CVE-2026-5422: Jupyter jupyter-server path traversal in _get_os_pathmediumCVSS 6.8EPSS 0.5%
- CVE-2026-40934: Jupyter Server insufficient session expiration after password resetmediumCVSS 6.8EPSS 0.4%
- CVE-2026-40110: Jupyter Jupyter Server CORS bypass via improper Origin validationhighCVSS 7.3EPSS 0.5%
- CVE-2026-35397: Jupyter Server path traversal in REST APIhighCVSS 8.8EPSS 0.7%
- CVE-2025-61669: Jupyter Server open redirect in LoginFormHandler via next parametermediumCVSS 6.1EPSS 0.3%
- CVE-2026-39378: nbconvert has an Arbitrary File Read via Path Traversal in HTMLExporter Image EmbeddingmediumCVSS 6.5EPSS 0.3%
- CVE-2026-39377: nbconvert has an Arbitrary File Write via Path Traversal in Cell Attachment FilenamesmediumCVSS 6.5EPSS 0.3%
- CVE-2026-34052: JupyterHub LTI Authenticator denial of service via unbounded memory growthmediumCVSS 5.9EPSS 0.4%
- CVE-2020-26275: Jupyter Server open redirect vulnerabilitymediumCVSS 6.1EPSS 1.4%
Most severe Jupyter vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-44181: Jupyter Enterprise Gateway SSTI in Kubernetes manifest renderingcriticalCVSS 10
- CVE-2026-44180: Jupyter Enterprise Gateway UID/GID restriction bypass in ContainerProcessProxycriticalCVSS 9.8EPSS 0.7%
- CVE-2026-44182: Jupyter Enterprise Gateway YAML injection in Kubernetes manifest renderingcriticalCVSS 4EPSS 0.6%
- CVE-2026-35397: Jupyter Server path traversal in REST APIhighCVSS 8.8EPSS 0.7%
- CVE-2026-114135: Jupyter Server authorization bypass in kernel gateway handlershighCVSS 8.8EPSS 0.4%
- CVE-2026-40110: Jupyter Jupyter Server CORS bypass via improper Origin validationhighCVSS 7.3EPSS 0.5%
- CVE-2026-114140: Jupyter nbconvert path traversal via output filename metadatahighCVSS 4EPSS 0.3%
- CVE-2026-5422: Jupyter jupyter-server path traversal in _get_os_pathmediumCVSS 6.8EPSS 0.5%
- CVE-2026-40934: Jupyter Server insufficient session expiration after password resetmediumCVSS 6.8EPSS 0.4%
- CVE-2026-39378: nbconvert has an Arbitrary File Read via Path Traversal in HTMLExporter Image EmbeddingmediumCVSS 6.5EPSS 0.3%
Vulnerabilities per week
3 vulnerabilities in the last four weeks, up from none in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 1 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 1 | 0 | |
| 19 Oct 2026 | 2 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Jupyter vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/jupyter)<a href="https://junglewise.ai/threats/vendors/jupyter"><img src="https://junglewise.ai/threats/vendors/jupyter/badge.svg" alt="Jupyter vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/jupyter.json, and this page as text at https://junglewise.ai/threats/vendors/jupyter.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Jupyter vulnerabilities", https://junglewise.ai/threats/vendors/jupyter, 13 November 2026.