{"cve":"CVE-2026-44182","nvd":{"published":"2026-07-16T23:16:16.590","modified":"2026-10-24T20:10:00.137","status":"Analyzed","description":"Jupyter Enterprise Gateway launches remote Jupyter Notebook kernels across distributed clusters like Apache Spark, Kubernetes, and Docker Swarm. In versions prior to 3.3.0, the 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 types, such as privileged pods. The 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. This issue has been fixed in version 3.3.0.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","score":10.0},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10.0},"cwes":["CWE-74"],"references":["https://github.com/jupyter-server/enterprise_gateway/releases/tag/v3.3.0","https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-cfw7-6c5v-2wjq","https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-cfw7-6c5v-2wjq"],"products":["jupyter:enterprise_gateway"],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-44182","score":0.00632,"percentile":0.49989,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-cfw7-6c5v-2wjq","url":"https://osv.dev/vulnerability/GHSA-cfw7-6c5v-2wjq","summary":"Jupyter Enterprise Gateway: Kubernetes Manifest Injection in Jinja2 Template Rendering","modified":"2026-06-29T12:26:05.688500085Z","packages":[{"ecosystem":"PyPI","name":"jupyter-enterprise-gateway","purl":"pkg:pypi/jupyter-enterprise-gateway","ranges":["<3.3.0"],"fixed":["3.3.0"]}]},{"id":"PYSEC-2026-362","url":"https://osv.dev/vulnerability/PYSEC-2026-362","summary":"Jupyter Enterprise Gateway: Kubernetes Manifest Injection in Jinja2 Template Rendering","modified":"2026-07-01T20:22:54.803627Z","packages":[{"ecosystem":"PyPI","name":"jupyter-enterprise-gateway","purl":"pkg:pypi/jupyter-enterprise-gateway","ranges":["<3.3.0"],"fixed":["3.3.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}