{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-61459", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-07-09T14:07:55.624Z", "datePublished": "2026-07-10T18:34:27.969Z", "dateUpdated": "2026-07-14T22:03:38.209Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-07-14T22:03:38.209Z" }, "title": "MCP Server Kubernetes < 3.9.0 Argument Injection via kubectl Structured Tools", "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." } ], "tags": [ "x_open-source" ], "datePublic": "2026-07-08T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-88", "description": "Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')", "type": "CWE" } ] } ], "affected": [ { "vendor": "Flux159", "product": "mcp-server-kubernetes", "defaultStatus": "unaffected", "packageURL": "pkg:npm/mcp-server-kubernetes", "versions": [ { "version": "0", "status": "affected", "versionType": "semver", "lessThan": "3.9.0" } ], "repo": "https://github.com/Flux159/mcp-server-kubernetes" } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:suyogs:mcp-server-kubernetes:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "3.9.0" } ] } ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.3, "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" } }, { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "CRITICAL", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" } } ], "references": [ { "url": "https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0", "name": "Release Notes", "tags": [ "release-notes" ] }, { "url": "https://github.com/Flux159/mcp-server-kubernetes/issues/328", "name": "Researcher Disclosure", "tags": [ "exploit", "technical-description" ] }, { "url": "https://github.com/Flux159/mcp-server-kubernetes/pull/329", "name": "Pull Request", "tags": [ "issue-tracking" ] }, { "url": "https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9a", "name": "Patch Commit", "tags": [ "patch" ] }, { "url": "https://www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-via-kubectl-structured-tools", "tags": [ "third-party-advisory" ] } ], "credits": [ { "lang": "en", "value": "George Chen", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-07-13T14:55:05.825674Z", "id": "CVE-2026-61459", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-13T14:55:11.357Z" } } ] } }