Jupyter Enterprise Gateway: Kubernetes Manifest Injection in Jinja2 Template Rendering

Summary The environment variables used during the rendering of the Kubernetes manifest allow YAML injection, enabling attackers to overwrite existing keys like securityContext and inject multi-document YAML to create additional unintended Kubernetes resources. Details The server interpolates...

PT-2026-46126

Name of the Vulnerable Software and Affected Versions Jupyter Enterprise Gateway versions prior to 3.3.0 Description The server interpolates untrusted environment variables into Kubernetes manifests without YAML-aware escaping, enabling YAML injection attacks. Attackers can inject new fields,...