CVE-2026-44181
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
jupyter_enterprise_gatewayPyPI | >= 2.0.0rc2, < 3.3.0 | 3.3.0 |
Affected products
4cpe:2.3:a:jupyter:enterprise_gateway:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:jupyter:enterprise_gateway:*:*:*:*:*:*:*:*range: >=2.1.0,<3.3.0
- cpe:2.3:a:jupyter:enterprise_gateway:2.0.0:-:*:*:*:*:*:*
- cpe:2.3:a:jupyter:enterprise_gateway:2.0.0:rc2:*:*:*:*:*:*
- Range: >=2.0.0rc2 <3.3.0
Patches
Vulnerability mechanics
References
3- github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-f49j-v924-fx9wnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-f49j-v924-fx9wghsaADVISORY
- github.com/jupyter-server/enterprise_gateway/releases/tag/v3.3.0nvdProductRelease Notes
News mentions
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