{"id":"CVE-2026-61459","sourceIdentifier":"disclosure@vulncheck.com","published":"2026-07-10T19:17:27.450","lastModified":"2026-10-25T15:10:00.147","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"MCP Server Kubernetes anterior a 3.9.0 contiene una vulnerabilidad de inyección de argumentos en herramientas estructuradas (kubectl_get, kubectl_describe, kubectl_delete) que permite a los atacantes eludir la comprobación de seguridad assertNoDangerousFlags al proporcionar los parámetros resourceType y name con guiones iniciales. Los atacantes pueden inyectar la bandera --server para redirigir los comandos kubectl a un servidor API controlado por el atacante, lo que provoca que el token de portador del operador sea transmitido externamente y permite el compromiso total del clúster."}],"affected":[{"source":"disclosure@vulncheck.com","affectedData":[{"vendor":"Flux159","product":"mcp-server-kubernetes","defaultStatus":"unaffected","repo":"https://github.com/Flux159/mcp-server-kubernetes","packageURL":"pkg:npm/mcp-server-kubernetes","versions":[{"version":"0","lessThan":"3.9.0","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"disclosure@vulncheck.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":9.3,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"disclosure@vulncheck.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-13T14:55:05.825674Z","id":"CVE-2026-61459","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"disclosure@vulncheck.com","type":"Secondary","description":[{"lang":"en","value":"CWE-88"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:suyogs:mcp-server-kubernetes:*:*:*:*:*:node.js:*:*","versionEndExcluding":"3.9.0","matchCriteriaId":"FD956E94-9EE1-4167-B33E-D4C15CF3200A"}]}]}],"references":[{"url":"https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9a","source":"disclosure@vulncheck.com","tags":["Patch"]},{"url":"https://github.com/Flux159/mcp-server-kubernetes/issues/328","source":"disclosure@vulncheck.com","tags":["Issue Tracking","Exploit","Mitigation","Vendor Advisory"]},{"url":"https://github.com/Flux159/mcp-server-kubernetes/pull/329","source":"disclosure@vulncheck.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0","source":"disclosure@vulncheck.com","tags":["Release Notes"]},{"url":"https://www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-via-kubectl-structured-tools","source":"disclosure@vulncheck.com","tags":["Third Party Advisory"]}]}