CVE-2026-44181 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-44181CRITICAL

jupyter-server enterprise_gateway — Jupyter Enterprise Gateway: Jinja2 Template Server Side Template Injection results in Remote Code Execution

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   H   H   H   10.0   .0070   50.4     —

AFFECTED
  Product             Versions                Fixed
  enterprise_gateway  >= 2.0.0rc2, < 3.3.0 –  —

TIMELINE
  May 5   Reserved by GitHub_M
  Jul 16  EXPLOIT PUBLISHED — CVE-2026-44181 (jupyter-server enterprise_gateway). Public exploit reference added.
  Jul 16  Published (CNA: GitHub_M)

CWE-1336 · CNA: GitHub_M · CVSS v4.0 · 2 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 5, 2026	Reserved	Reserved by GitHub_M
July 16, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-44181 (jupyter-server enterprise_gateway). Public exploit reference added.
July 16, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
jupyter-server	enterprise_gateway	—	>= 2.0.0rc2, < 3.3.0	—

Weaknesses

CWE-1336

References (2)

https://github.com/jupyter-server/enterprise_gateway/releases/tag/v3.3.0 [Product, Release Notes]
https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-f49j-v924-fx9w [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-44181 at cve.org

Vendors: jupyter-server

Weaknesses: CWE-1336

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44181 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.