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    CVE-2026-44181

    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.

    Published:Jul 16, 2026
    Last Modified:Jul 23, 2026
    EPS:Jul 16, 2026
    EPSS Score:0.0046
    CVSS Score:10

    Affected Products

    Vendor
    Jupyter-server
    Product
    Enterprise Gateway

    Exploits

    https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-f49j-v924-fx9whttps://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-f49j-v924-fx9w

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High