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CVE-2026-61459

CRITICAL
9.8
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-61459
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-07-09 14:07 UTC
Published
2026-07-10 18:34 UTC
Last updated
2026-07-10 18:34 UTC
Primary CWE
CWE-88
Improper Neutralization of Argument Delimiters in a Command …
Vendor / Product
Flux159 / mcp-server-kubernetes
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products (1)
VendorProductPlatformVersions
Flux159 mcp-server-kubernetes — 0 < 3.9.0
Weakness (CWE)
CWESourceDescription
CWE-88 cna Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
CVSS scores (2)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 CRITICAL 4.0 cna 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
References (5)
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