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.
CVE-2026-44181
CRITICALPre-NVD 10.010.0Trending — 3 sources updated this weekElevated
EchelonGraph scoreLOW confidence
This critical-severity CVE scores 10.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.9%, top 24% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
10.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 10.0Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 10.0
- EG Score
- 10.0(low)
- EG Risk
- —
- EPSS
- 37.4%
- KEV
- Not listed
Published
June 3, 2026
Last Modified
July 17, 2026
Advisory Details (2)
Auto-updated Jul 17, 2026🔬 Proof of concept available. Patch available. Sources: github_release, github.
github Patch Available🟡 PoC Available
Jinja2 Template Server Side Template Injection resulting in Remote Code Execution · Advisory · jupyter-server/enterprise_gateway · GitHub
https://github.com/jupyter-server/enterprise_gateway/security/advisories/GHSA-f49j-v924-fx9wgithub_release Patch Available
Jupyter Enterprise Gateway 3.3.0
Patch available: jupyter-server/enterprise_gateway v3.3.0
https://github.com/jupyter-server/enterprise_gateway/releases/tag/v3.3.0Vendor Advisories for CVE-2026-44181(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| jupyter-enterprise-gateway | 2.0.0 ... 3.2.3 (22 versions) | 3.3.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 8× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-21 15:24 UTCEPSS rescore
- 2026-07-20 17:08 UTCEPSS rescore
- 2026-07-19 14:31 UTCEPSS rescore
- 2026-07-19 02:29 UTCEPSS rescore
- 2026-07-18 10:04 UTCEPSS rescore
- 2026-07-16 23:43 UTCEG score recompute▲ 10.00
- 2026-07-16 23:43 UTCNVD updateCVSS v3 → 10 · CVSS v4 → 10
- 2026-06-14 23:18 UTCEPSS rescore
- 2026-06-13 23:00 UTCEPSS rescore
- 2026-06-12 23:12 UTCEPSS rescore
- 2026-06-03 22:10 UTCEG score recompute
Frequently asked(5)
What is CVE-2026-44181?
CVE-2026-44181 is a critical vulnerability published on June 3, 2026. 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…
When was CVE-2026-44181 disclosed?
CVE-2026-44181 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on July 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44181 actively exploited?
CVE-2026-44181 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44181?
CVE-2026-44181 has a CVSS v3 base score of 10.0 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-44181?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44181, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-44181
Is Your Infrastructure Affected by CVE-2026-44181?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.