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Vulnerabilities CVE-2026-61459

CVE-2026-61459

Critical
Open
TLP:CLEAR

MCP Server Kubernetes < 3.9.0 Argument Injection via kubectl Structured Tools

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Description

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.

Details

CVSS Score
9.3
EPSS Score
0.46%

37.4th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Jul 10, 2026
Last Modified
Jul 13, 2026
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