{
"id": "GHSA-wmg3-h8mf-wgvr",
"aliases": [
"CVE-2026-61459"
],
"details": "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.",
"summary": "mcp-server-kubernetes argument injection can expose Kubernetes cluster credentials",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.9.0"
}
]
}
],
"package": {
"name": "mcp-server-kubernetes",
"ecosystem": "PyPI"
}
}
],
"modified": "2026-08-12T19:26:54Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V4",
"score": "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"
}
],
"published": "2026-07-10T21:32:32Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61459",
"type": "ADVISORY"
},
{
"url": "https://github.com/Flux159/mcp-server-kubernetes/issues/328",
"type": "WEB"
},
{
"url": "https://github.com/Flux159/mcp-server-kubernetes/pull/329",
"type": "WEB"
},
{
"url": "https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9a",
"type": "WEB"
},
{
"url": "https://github.com/Flux159/mcp-server-kubernetes",
"type": "PACKAGE"
},
{
"url": "https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0",
"type": "WEB"
},
{
"url": "https://www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-via-kubectl-structured-tools",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-88"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": "2026-07-10T19:17:27Z",
"github_reviewed_at": "2026-08-12T19:26:54Z"
}
}