CVE-2026-44180
Jupyter Enterprise Gateway: ContainerProcessProxy._enforce_prohibited_ids can be Bypassed
Description
Jupyter Enterprise Gateway launches remote Jupyter Notebook kernels across distributed clusters like Apache Spark, Kubernetes, and Docker Swarm. Versions 2.0.0rc1 and above prior to 3.3.0 have a prohibited UID and GID feature that by default prevents launching kernels with UID or GID 0 (root), and this restriction can be bypassed using a specially crafted KERNEL_UID or KERNEL_GID value. This input validation vulnerability allows running Jupyter kernels as root, which can be dangerous as it allows more attack surface, and may lead to container escapes, compromising the worker node and all workloads running on it. Repeated exploitation can compromise all worker nodes, and thus the entire Kubernetes cluster. It is possible to specify volume mounts, so one vector for a container escape is to use a hostPath R/W volume mount, use this UID/GID bypass to run as root, and then gain code execution in the underlying worker node by creating a crontab entry in the mounted host file system. This issue has been fixed in version 3.0.0.
INFO
Published Date :
July 16, 2026, 10:17 p.m.
Last Modified :
Oct. 24, 2026, 8:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE |
Solution
- Update Jupyter Enterprise Gateway to version 3.0.0 or later.
- Ensure prohibited UID/GID features are properly configured.
- Restrict root access for kernel launches.
- Monitor for suspicious kernel activity.
Public PoC/Exploit Available at Github
CVE-2026-44180 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-44180.
| URL | Resource |
|---|---|
| https://github.com/jupyter-server/enterprise_gateway/releases/tag/v3.3.0 | Product Release Notes |
| https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-chq7-94j8-cj28 | Exploit Vendor Advisory |
| https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-chq7-94j8-cj28 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-44180 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-44180
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python Go
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-44180 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-44180 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Added Translation Title: enterprise_gateway de jupyter-server, Description: Jupyter Enterprise Gateway lanza kernels remotos de Jupyter Notebook en clústeres distribuidos como Apache Spark, Kubernetes y Docker Swarm. Las versiones 2.0.0rc1 y superiores anteriores a la 3.3.0 tienen una característica de UID y GID prohibidos que, por defecto, impide el lanzamiento de kernels con UID o GID 0 (root), y esta restricción puede ser eludida utilizando un valor KERNEL_UID o KERNEL_GID especialmente diseñado. Esta vulnerabilidad de validación de entrada permite ejecutar kernels de Jupyter como root, lo que puede ser peligroso ya que permite una mayor superficie de ataque, y puede conducir a escapes de contenedor, comprometiendo el nodo trabajador y todas las cargas de trabajo que se ejecutan en él. La explotación repetida puede comprometer todos los nodos trabajadores y, por lo tanto, todo el clúster de Kubernetes. Es posible especificar montajes de volumen, por lo que un vector para un escape de contenedor es usar un montaje de volumen hostPath R/W, usar este bypass de UID/GID para ejecutar como root, y luego obtener ejecución de código en el nodo trabajador subyacente creando una entrada de crontab en el sistema de archivos del host montado. Este problema ha sido solucionado en la versión 3.0.0. -
Initial Analysis by [email protected]
Aug. 05, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:jupyter:enterprise_gateway:*:*:*:*:*:*:*:* versions from (including) 2.1.0 up to (excluding) 3.3.0 *cpe:2.3:a:jupyter:enterprise_gateway:2.0.0:-:*:*:*:*:*:* *cpe:2.3:a:jupyter:enterprise_gateway:2.0.0:rc2:*:*:*:*:*:* *cpe:2.3:a:jupyter:enterprise_gateway:2.0.0:rc1:*:*:*:*:*:* Added Reference Type GitHub, Inc.: https://github.com/jupyter-server/enterprise_gateway/releases/tag/v3.3.0 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-chq7-94j8-cj28 Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-chq7-94j8-cj28 Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 17, 2026
Action Type Old Value New Value Added Reference https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-chq7-94j8-cj28 Added SSVC {'id': 'CVE-2026-44180', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-17T14:20:43.912230Z'} -
New CVE Received by [email protected]
Jul. 16, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'jupyter-server', 'product': 'enterprise_gateway', 'versions': [{'status': 'affected', 'version': '>= 2.0.0rc1, < 3.3.0'}]}] Added Description Jupyter Enterprise Gateway launches remote Jupyter Notebook kernels across distributed clusters like Apache Spark, Kubernetes, and Docker Swarm. Versions 2.0.0rc1 and above prior to 3.3.0 have a prohibited UID and GID feature that by default prevents launching kernels with UID or GID 0 (root), and this restriction can be bypassed using a specially crafted KERNEL_UID or KERNEL_GID value. This input validation vulnerability allows running Jupyter kernels as root, which can be dangerous as it allows more attack surface, and may lead to container escapes, compromising the worker node and all workloads running on it. Repeated exploitation can compromise all worker nodes, and thus the entire Kubernetes cluster. It is possible to specify volume mounts, so one vector for a container escape is to use a hostPath R/W volume mount, use this UID/GID bypass to run as root, and then gain code execution in the underlying worker node by creating a crontab entry in the mounted host file system. This issue has been fixed in version 3.0.0. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-20 Added Reference https://github.com/jupyter-server/enterprise_gateway/releases/tag/v3.3.0 Added Reference https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-chq7-94j8-cj28