CVE-2026-47250

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 82% 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
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

mcp-server-kubernetes is a Model Context Protocol server for Kubernetes cluster management. Prior to version 3.7.0, the kubectl_generic tool in mcp-server-kubernetes passes user-supplied flags directly to kubectl without any allowlist, enabling a privilege escalation attack within Kubernetes environments. An attacker who already has limited cluster or codebase access, for example, a developer with pod-deployment permissions but not cluster-admin credentials, can plant a single structured JSON line in an application's log output. When an operator with a privileged kubeconfig uses the MCP server to read those logs and their AI agent follows the injected instruction, kubectl_generic is called with --server=https://attacker.example.com and --insecure-skip-tls-verify=true. kubectl sends all API requests, including the Authorization: Bearer header from the operator's kubeconfig to the attacker's endpoint. The captured token can then be replayed directly against the real Kubernetes API server, granting the attacker the full RBAC permissions of the operator's service account. This issue has been patched in version 3.7.0.

CVSS v3
6.1
EG Score
6.1(medium)
EPSS
18.3%
KEV
Not listed

Published

June 5, 2026

Last Modified

June 11, 2026

Advisory Details (2)

Auto-updated Jun 13, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github.
github Patch Available🟡 PoC Available

kubectl-generic flag injection enables Kubernetes bearer token exfiltration · Advisory · Flux159/mcp-server-kubernetes · GitHub

https://github.com/Flux159/mcp-server-kubernetes/security/advisories/GHSA-6mx4-4h42-r8vh
github_release Patch Available

Release v3.7.0

Patch available: Flux159/mcp-server-kubernetes v3.7.0

https://github.com/Flux159/mcp-server-kubernetes/releases/tag/v3.7.0

Vendor Advisories for CVE-2026-47250(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)
npm(1)
PackageVulnerable rangeFixed inDependents
mcp-server-kubernetes—3.7.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 61× 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.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-05 18:35 UTCEG score recompute
  4. 2026-07-05 02:30 UTCEPSS rescore
  5. 2026-07-04 06:31 UTCEPSS rescore
  6. 2026-07-03 23:28 UTCEG score recompute
  7. 2026-07-02 23:16 UTCEG score recompute
  8. 2026-07-01 23:05 UTCEG score recompute
  9. 2026-07-01 15:07 UTCEPSS rescore
  10. 2026-06-30 23:22 UTCEPSS rescore
  11. 2026-06-30 22:52 UTCEG score recompute
  12. 2026-06-29 22:41 UTCEG score recompute
  13. 2026-06-29 14:06 UTCEPSS rescore
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-28 22:28 UTCEG score recompute
  16. 2026-06-28 14:07 UTCEPSS rescore
  17. 2026-06-28 04:56 UTCEPSS rescore
  18. 2026-06-28 04:56 UTCEPSS rescore
  19. 2026-06-27 22:17 UTCEG score recompute
  20. 2026-06-27 03:08 UTCEPSS rescore
  21. 2026-06-26 21:59 UTCEG score recompute
  22. 2026-06-25 21:48 UTCEG score recompute
  23. 2026-06-25 13:49 UTCEPSS rescore
  24. 2026-06-24 21:36 UTCEG score recompute
  25. 2026-06-24 14:05 UTCEPSS rescore
Show 38 more
  1. 2026-06-23 21:33 UTCEPSS rescore
  2. 2026-06-23 21:33 UTCEPSS rescore
  3. 2026-06-23 17:37 UTCEG score recompute
  4. 2026-06-22 14:41 UTCEG score recompute
  5. 2026-06-22 14:25 UTCEPSS rescore
  6. 2026-06-22 14:25 UTCEPSS rescore
  7. 2026-06-21 14:56 UTCEPSS rescore
  8. 2026-06-21 14:56 UTCEPSS rescore
  9. 2026-06-21 05:21 UTCEG score recompute
  10. 2026-06-21 01:59 UTCEPSS rescore
  11. 2026-06-21 01:59 UTCEPSS rescore
  12. 2026-06-19 19:54 UTCEG score recompute
  13. 2026-06-19 19:26 UTCEPSS rescore
  14. 2026-06-19 19:26 UTCEPSS rescore
  15. 2026-06-18 19:42 UTCEG score recompute
  16. 2026-06-18 17:52 UTCEPSS rescore
  17. 2026-06-18 17:52 UTCEPSS rescore
  18. 2026-06-17 19:31 UTCEG score recompute
  19. 2026-06-17 17:53 UTCEPSS rescore
  20. 2026-06-16 19:20 UTCEG score recompute
  21. 2026-06-16 17:53 UTCEPSS rescore
  22. 2026-06-15 19:09 UTCEG score recompute
  23. 2026-06-15 17:49 UTCEPSS rescore
  24. 2026-06-15 17:49 UTCEPSS rescore
  25. 2026-06-14 23:18 UTCEPSS rescore
  26. 2026-06-14 18:57 UTCEG score recompute
  27. 2026-06-13 23:00 UTCEPSS rescore
  28. 2026-06-13 18:44 UTCEG score recompute
  29. 2026-06-12 23:12 UTCEPSS rescore
  30. 2026-06-12 23:12 UTCEPSS rescore
  31. 2026-06-12 18:34 UTCEG score recompute
  32. 2026-06-11 18:22 UTCEG score recompute
  33. 2026-06-10 18:11 UTCEG score recompute
  34. 2026-06-09 18:00 UTCEG score recompute
  35. 2026-06-08 17:49 UTCEG score recompute
  36. 2026-06-07 16:19 UTCEG score recompute
  37. 2026-06-06 16:08 UTCEG score recompute
  38. 2026-06-05 15:57 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-47250?
CVE-2026-47250 is a medium vulnerability published on June 5, 2026. mcp-server-kubernetes is a Model Context Protocol server for Kubernetes cluster management. Prior to version 3.7.0, the kubectlgeneric tool in mcp-server-kubernetes passes user-supplied flags directly to kubectl without any allowlist, enabling a privilege escalation attack within Kubernetes…
When was CVE-2026-47250 disclosed?
CVE-2026-47250 was first published in the National Vulnerability Database on June 5, 2026, with the most recent update on June 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47250 actively exploited?
CVE-2026-47250 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47250?
CVE-2026-47250 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-47250?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47250, 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

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