Vendor
Project Jupyter vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 10 vulnerabilities in Project Jupyter: 0 in the last 7 days and 7 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-73417, was published on 13 August 2026. 2 technologies have a page of their own.
- Last 7 days
- 0
- Last 90 days
- 7
- Critical, all time
- 1
- Exploited in the wild
- 0
About Project Jupyter
Project Jupyter is a non-profit organization created to develop open-source software, open-standards, and services for interactive computing across dozens of programming languages.
Project Jupyter technologies
Latest Project Jupyter vulnerabilities
- CVE-2026-73417: JupyterLab arbitrary code execution via malicious overrides.jsonmediumCVSS 4EPSS 0.8%
- CVE-2026-73416: JupyterLab extension blocklist bypass via package name variantmediumCVSS 4EPSS 0.7%
- CVE-2026-73627: JupyterLab plugin manager lock-rule enforcement bypassinfoCVSS 6EPSS 0.4%
- JupyterLab XSS via crafted settings file in overrides.jsonhighCVSS 8.6
- JupyterLab blocklist bypass in PyPI extension managermediumCVSS 6.1
- Jupyter JupyterLab auth bypass in PluginManager lock-rule enforcementmediumCVSS 6
- CVE-2026-40171: PYSEC-2026-2682 - Jupyter Notebook Vulnerable to Authentication Token Theft via CommandLinker XSSmediumCVSS 4EPSS 0.7%
- CVE-2026-42557: Jupyter JupyterLab arbitrary command execution via HTML sanitizer bypasscriticalCVSS 9.6EPSS 0.7%
- CVE-2026-42266: Project Jupyter JupyterLab privilege escalation in PyPI Extension ManagerhighCVSS 8.8EPSS 0.9%
- CVE-2018-19352: PYSEC-2018-18 - Jupyter Notebook before 5.7.2 allows XSS via a crafted directory name because…lowCVSS 3EPSS 1.3%
Most severe Project Jupyter vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-42557: Jupyter JupyterLab arbitrary command execution via HTML sanitizer bypasscriticalCVSS 9.6EPSS 0.7%
- CVE-2026-42266: Project Jupyter JupyterLab privilege escalation in PyPI Extension ManagerhighCVSS 8.8EPSS 0.9%
- JupyterLab XSS via crafted settings file in overrides.jsonhighCVSS 8.6
- JupyterLab blocklist bypass in PyPI extension managermediumCVSS 6.1
- Jupyter JupyterLab auth bypass in PluginManager lock-rule enforcementmediumCVSS 6
- CVE-2026-73417: JupyterLab arbitrary code execution via malicious overrides.jsonmediumCVSS 4EPSS 0.8%
- CVE-2026-73416: JupyterLab extension blocklist bypass via package name variantmediumCVSS 4EPSS 0.7%
- CVE-2026-40171: PYSEC-2026-2682 - Jupyter Notebook Vulnerable to Authentication Token Theft via CommandLinker XSSmediumCVSS 4EPSS 0.7%
- CVE-2018-19352: PYSEC-2018-18 - Jupyter Notebook before 5.7.2 allows XSS via a crafted directory name because…lowCVSS 3EPSS 1.3%
- CVE-2026-73627: JupyterLab plugin manager lock-rule enforcement bypassinfoCVSS 6EPSS 0.4%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 1 | 0 | |
| 20 Jul 2026 | 3 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 3 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
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/project-jupyter.json, 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, "Project Jupyter vulnerabilities", https://junglewise.ai/threats/vendors/project-jupyter, 26 September 2026.