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CVE-2026-61459 is an argument injection vulnerability in Flux159's MCP Server Kubernetes affecting versions prior to 3.9.0. The flaw is present in the structured tool wrappers for kubectl_get, kubectl_describe, and kubectl_delete. Input validation intended to block dangerous flags can be bypassed because attacker-controlled resourceType and name parameters are accepted with leading dashes, allowing them to be interpreted as command-line options rather than only as resource identifiers. This enables injection of the kubectl --server option, which redirects command execution to an attacker-controlled Kubernetes API endpoint. As a result, the operator's bearer token can be transmitted to the attacker-controlled server, creating a path to full cluster compromise.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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