Vulnerability in Flux159 Mcp-Server-Kubernetes
CVE-2026-61459
MCP Server Kubernetes before 3.9.0 contains an argument injection vulnerability in structured tools (kubectl_get, kubectl_describe, kubectl_delete) that allows attackers to bypass the assertNoDangerousFlags security check by supplying resourceType and name parameters with leading dashes. Attackers can inject the --server flag to redirect kubectl commands to an attacker-controlled API server, causing the operator's bearer token to be transmitted externally and enabling full cluster compromise.
EPSS: 0.021 (80.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (release-notes, Release Notes)
- disclosure@vulncheck.com (Exploit, technical-description, exploit, Mitigation, Issue Tracking, Vendor Advisory)
- disclosure@vulncheck.com (issue-tracking, Patch, Issue Tracking)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-61459?
- CVE-2026-61459 is a critical-severity vulnerability in Flux159 Mcp-Server-Kubernetes, classified under Argument Injection. CVSS score: 9.8/10. Published 2026-07-10.
- How severe is CVE-2026-61459?
- Critical severity. CVSS v3 base score is 9.8 out of 10.