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TI-2026-32160 Aliases CVE-2026-44181GHSA-f49j-v924-fx9w

Jupyter Enterprise Gateway: Jinja2 Template Server Side Template Injection results in Remote Code Execution

Priority HIGH 82CWE-1336Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-1336.

Summary

Jupyter Enterprise Gateway launches remote Jupyter Notebook kernels across distributed clusters like Apache Spark, Kubernetes, and Docker Swarm. In versions 2.0.0rc2 and above, prior to 3.3.0, the environment variables (KERNEL_XXX) used during the rendering of the Kubernetes manifest are vulnerable to Server Side Template Injection (SSTI). By including Jinja2 template expressions it is possible to execution Python code and OS Commands in the Enterprise Gateway service. The code can use or steal the Kubernetes service account token, which can steal Kubernetes secrets and be used to fully compromise the Kubernetes cluster by scheduling a privileged pod or a pod with a hostPath volume mount. This issue has been fixed in version 3.3.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00767 55th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed enterprise_gateway (jupyter-server): 3.3.0jupyter_enterprise_gateway (PyPI): 3.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
jupyterlabenterprise_gateway2.0.0rc2 to before 3.3.03.3.0Patch availableCNA
—jupyter_enterprise_gateway (PyPI)2.0.0rc2 to before 3.3.03.3.0Patch availableGHSA-f49j-v924-fx9w
  • enterprise_gateway Vendorjupyterlab Affected 2.0.0rc2 to before 3.3.0 Fixed in 3.3.0 Patch available CNA
  • jupyter_enterprise_gateway (PyPI) Vendor— Affected 2.0.0rc2 to before 3.3.0 Fixed in 3.3.0 Patch available GHSA-f49j-v924-fx9w

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:jupyter:enterprise_gateway:*:*:*:*:*:*:*:*2.1.0 to before 3.3.0Vulnerablejupyterlab
cpe:2.3:a:jupyter:enterprise_gateway:2.0.0:-:*:*:*:*:*:*2.0.0Vulnerablejupyterlab
cpe:2.3:a:jupyter:enterprise_gateway:2.0.0:rc2:*:*:*:*:*:*2.0.0 rc2Vulnerablejupyterlab
  • cpe:2.3:a:jupyter:enterprise_gateway:*:*:*:*:*:*:*:* Versions 2.1.0 to before 3.3.0 Vulnerable ·jupyterlab
  • cpe:2.3:a:jupyter:enterprise_gateway:2.0.0:-:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·jupyterlab
  • cpe:2.3:a:jupyter:enterprise_gateway:2.0.0:rc2:*:*:*:*:*:* Versions 2.0.0 rc2 Vulnerable ·jupyterlab

Remediation

  • Fix · CNA enterprise_gateway (jupyter-server) Fixed in 3.3.0
  • Fix · GHSA-f49j-v924-fx9w jupyter_enterprise_gateway (PyPI) Fixed in 3.3.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44181
  2. 2026-10-03 Alias added: GHSA-f49j-v924-fx9w

References

Exploit 1

Other 2

  • TI-2026-32161 Jupyter Enterprise Gateway Has Kubernetes Manifest Injection via Jinja2 Template Rendering CVSS 4.0CRITICAL 10.0
  • TI-2026-32159 Jupyter Enterprise Gateway: ContainerProcessProxy._enforce_prohibited_ids can be Bypassed CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences