{"items":[{"id":"NVI-00018254","kind":"vulnerability","title":"Jupyter Enterprise Gateway: Kubernetes Manifest Injection in Jinja2 Template Rendering","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cfw7-6c5v-2wjq","CVE-2026-44182"],"plain_summary":"GitHub lists this reviewed advisory for jupyter_enterprise_gateway. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-011d3acb0fb13ee310e878a35cac3234"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-011d3acb0fb13ee310e878a35cac3234","url":"https://github.com/advisories/GHSA-cfw7-6c5v-2wjq","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cfw7-6c5v-2wjq","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T00:53:06.181Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-011d3acb0fb13ee310e878a35cac3234"],"technology":"jupyter_enterprise_gateway","known_exclusions":[],"conditions_summary":"### Summary\n\nThe 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.\n\n### Details\n\nThe server interpolates untrusted environment variables (e.g., `KERNEL_XXX`) into Kubernetes manifests without YAML-aware escaping, enabling YAML injection attacks. Attackers can inject new fields, overwrite critical fields (e.g., duplicate `securityContext` keys, where the last one prevails), and inject document boundaries (`---` for new documents, `...` for end-of-document) to generate multiple resources, potentially creating arbitrary kinds like privileged pods.\n\nThe Jinja2 template for the Kubernetes manifest contains several `kernel_xxx` variables, such as `kernel_working_dir` that are used when rendering the manifest and are all vectors for YAML injection.\nhttps://github.com/jupyter-server/enterprise_gateway/blob/152c20f162f2fab700c04c8830ebf8c1e2e2217a/etc/kernel-launchers/kubernetes/scripts/kernel-pod.yaml.j2#L77\n\nThese values come from the environment passed in the API call, where they were `KERN","public_affected_ranges":["< 3.3.0"]}],"null_published_at":"2026-11-07T07:07:39.794Z","source_updated_at":"2026-06-03T21:37:18.000Z","source_disclosed_at":"2026-06-03T21:37:16.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-07T00:53:06.181Z"}],"next_cursor":null,"snapshot_revision":"42594"}