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CVE-2026-44180— Jupyter Enterprise Gateway: ContainerProcessProxy._enforce_prohibited_ids can be Bypassed

Quick assessment

Affected
jupyter-server enterprise_gateway
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Jupyter Enterprise Gateway是Jupyter组织的一款网络设备产品。 Jupyter Enterprise Gateway 2.0.0rc1版本至3.3.0之前版本存在输入验证错误漏洞，该漏洞源于输入验证不当，允许使用特制的KERNEL_UID或KERNEL_GID值绕过禁止以root身份启动内核的限制，可能导致容器逃逸，危及工作节点及整个集群安全。以下版本受到影响：2.0.0rc1版本、3.3.0之前版本。

CVSS 9.8 · Critical EPSS 0.55% · P44

Affected Version Matrix 1

VendorProduct Version RangeStatus
jupyter-server enterprise_gateway >= 2.0.0rc1, < 3.3.0 affected
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I. Basic Information for CVE-2026-44180

Vulnerability Information
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Vulnerability Title
Jupyter Enterprise Gateway: ContainerProcessProxy._enforce_prohibited_ids can be Bypassed
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Jupyter Enterprise Gateway 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jupyter Enterprise Gateway是Jupyter组织的一款网络设备产品。 Jupyter Enterprise Gateway 2.0.0rc1版本至3.3.0之前版本存在输入验证错误漏洞，该漏洞源于输入验证不当，允许使用特制的KERNEL_UID或KERNEL_GID值绕过禁止以root身份启动内核的限制，可能导致容器逃逸，危及工作节点及整个集群安全。以下版本受到影响：2.0.0rc1版本、3.3.0之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
jupyter-server enterprise_gateway >= 2.0.0rc1, < 3.3.0 -

II. Public POCs for CVE-2026-44180

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 23335 chars
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III. Intelligence Information for CVE-2026-44180

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Vendor Advisories for CVE-2026-44180 (1)

Vendor Pages for CVE-2026-44180 (1)

Same Patch Batch · jupyter-server · 2026-07-16 · 3 CVEs total

CVE-2026-44181 Jupyter Enterprise Gateway: Jinja2 Template Server Side Template Injection results in Remo
CVE-2026-44182 Jupyter Enterprise Gateway Has Kubernetes Manifest Injection via Jinja2 Template Rendering

IV. Related Vulnerabilities

Same product: enterprise_gateway
Same vendor: jupyter-server
Same weakness: CWE-20

V. Comments for CVE-2026-44180

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