# jupyterhub (PyPI) vulnerabilities Source: https://junglewise.ai/threats/technologies/jupyterhub Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/jupyterhub.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 9 vulnerabilities in jupyterhub (PyPI): 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-54338, was published on 25 August 2026. Nothing was published in the last eight weeks. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 1 - All time: 9 (0 critical, 0 exploited in the wild) ## About jupyterhub (PyPI) Multi-user server for hosting and managing Jupyter notebook environments. ## Latest jupyterhub (PyPI) vulnerabilities - [CVE-2026-54338: JupyterHub unauthenticated denial of service in login form handling](https://junglewise.ai/threats/cve-2026-54338-jupyterhub-unauthenticated-denial-of-service-in-login-form) (medium, CVSS 5.3, published 25 Aug 2026) - [CVE-2024-28233: PYSEC-2026-1480 - Cross site scripting (XSS) in JupyterHub via Self-XSS leveraged by Cookie Tossing](https://junglewise.ai/threats/cve-2024-28233-cross-site-scripting-xss-in-jupyterhub-via-self-xss-leveraged-by) (low, CVSS 3.1, published 7 Jul 2026) - [CVE-2019-10255: PYSEC-2026-647 - Open Redirect vulnerability in jupyterhub and notebook](https://junglewise.ai/threats/cve-2019-10255-open-redirect-vulnerability-in-jupyterhub-and-notebook) (low, CVSS 3, published 2 Jul 2026) - [CVE-2026-40864: JupyterHub XSRF protection bypass in HTTP form endpoints](https://junglewise.ai/threats/cve-2026-40864-jupyterhub-xsrf-protection-bypass-in-http-form-endpoints) (medium, CVSS 5.4, published 22 May 2026) - [CVE-2026-33709: Jupyter JupyterHub open redirect vulnerability](https://junglewise.ai/threats/cve-2026-33709-jupyter-jupyterhub-open-redirect-vulnerability) (medium, CVSS 6.1, published 3 Apr 2026) - [CVE-2024-41942: JupyterHub has a privilege escalation vulnerability with the `admin:users` scope](https://junglewise.ai/threats/cve-2024-41942-jupyterhub-has-a-privilege-escalation-vulnerability-with-the) (low, CVSS 3.1, published 8 Aug 2024) - [CVE-2021-41247: incomplete JupyterHub logout with simultaneous JupyterLab sessions](https://junglewise.ai/threats/cve-2021-41247-incomplete-jupyterhub-logout-with-simultaneous-jupyterlab) (low, CVSS 3.1, published 4 Nov 2021) - [CVE-2020-36191: Cross-Site Request Forgery in JupyterHub](https://junglewise.ai/threats/cve-2020-36191-cross-site-request-forgery-in-jupyterhub) (low, CVSS 3.1, published 13 Jan 2021) - [PYSEC-2018-151 - An issue was discovered in Project Jupyter JupyterHub OAuthenticator 0.6.x before 0.6.2 and 0.7.x…](https://junglewise.ai/threats/pysec-2018-151-an-issue-was-discovered-in-project-jupyter-jupyterhub-20e45d8e) (low, CVSS 3.1, published 18 Feb 2018) ## Most severe jupyterhub (PyPI) vulnerabilities - [CVE-2026-33709: Jupyter JupyterHub open redirect vulnerability](https://junglewise.ai/threats/cve-2026-33709-jupyter-jupyterhub-open-redirect-vulnerability) (medium, CVSS 6.1, published 3 Apr 2026) - [CVE-2026-40864: JupyterHub XSRF protection bypass in HTTP form endpoints](https://junglewise.ai/threats/cve-2026-40864-jupyterhub-xsrf-protection-bypass-in-http-form-endpoints) (medium, CVSS 5.4, published 22 May 2026) - [CVE-2026-54338: JupyterHub unauthenticated denial of service in login form handling](https://junglewise.ai/threats/cve-2026-54338-jupyterhub-unauthenticated-denial-of-service-in-login-form) (medium, CVSS 5.3, published 25 Aug 2026) - [CVE-2021-41247: incomplete JupyterHub logout with simultaneous JupyterLab sessions](https://junglewise.ai/threats/cve-2021-41247-incomplete-jupyterhub-logout-with-simultaneous-jupyterlab) (low, CVSS 3.1, published 4 Nov 2021) - [CVE-2024-41942: JupyterHub has a privilege escalation vulnerability with the `admin:users` scope](https://junglewise.ai/threats/cve-2024-41942-jupyterhub-has-a-privilege-escalation-vulnerability-with-the) (low, CVSS 3.1, published 8 Aug 2024) - [CVE-2020-36191: Cross-Site Request Forgery in JupyterHub](https://junglewise.ai/threats/cve-2020-36191-cross-site-request-forgery-in-jupyterhub) (low, CVSS 3.1, published 13 Jan 2021) - [CVE-2024-28233: PYSEC-2026-1480 - Cross site scripting (XSS) in JupyterHub via Self-XSS leveraged by Cookie Tossing](https://junglewise.ai/threats/cve-2024-28233-cross-site-scripting-xss-in-jupyterhub-via-self-xss-leveraged-by) (low, CVSS 3.1, published 7 Jul 2026) - [PYSEC-2018-151 - An issue was discovered in Project Jupyter JupyterHub OAuthenticator 0.6.x before 0.6.2 and 0.7.x…](https://junglewise.ai/threats/pysec-2018-151-an-issue-was-discovered-in-project-jupyter-jupyterhub-20e45d8e) (low, CVSS 3.1, published 18 Feb 2018) - [CVE-2019-10255: PYSEC-2026-647 - Open Redirect vulnerability in jupyterhub and notebook](https://junglewise.ai/threats/cve-2019-10255-open-redirect-vulnerability-in-jupyterhub-and-notebook) (low, CVSS 3, published 2 Jul 2026) ## Vulnerabilities per week Nothing was published in the last eight weeks. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 1 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other PyPI technologies - [tensorflow (PyPI)](https://junglewise.ai/threats/technologies/pypi-tensorflow): 435 vulnerabilities - [tensorflow-cpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-cpu): 430 vulnerabilities - [tensorflow-gpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-gpu): 427 vulnerabilities - [open-webui (PyPI)](https://junglewise.ai/threats/technologies/open-webui): 177 vulnerabilities - [Django (PyPI)](https://junglewise.ai/threats/technologies/django): 173 vulnerabilities - [apache-airflow (PyPI)](https://junglewise.ai/threats/technologies/apache-airflow): 159 vulnerabilities - [pillow (PyPI)](https://junglewise.ai/threats/technologies/pillow): 125 vulnerabilities - [praisonai (PyPI)](https://junglewise.ai/threats/technologies/pypi-praisonai): 120 vulnerabilities - [vllm (PyPI)](https://junglewise.ai/threats/technologies/pypi-vllm): 117 vulnerabilities - [plone (PyPI)](https://junglewise.ai/threats/technologies/pypi-plone): 101 vulnerabilities - [mlflow (PyPI)](https://junglewise.ai/threats/technologies/mlflow): 88 vulnerabilities - [picklescan (PyPI)](https://junglewise.ai/threats/technologies/picklescan): 86 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "jupyterhub (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/jupyterhub, 13 November 2026.