{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46339", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-13T18:37:30.990Z", "datePublished": "2026-07-15T20:41:06.937Z", "dateUpdated": "2026-07-15T20:41:06.937Z"}, "containers": {"cna": {"title": "9Router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes", "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "lang": "en", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-306", "lang": "en", "description": "CWE-306: Missing Authentication for Critical Function", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 10, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj"}, {"name": "https://github.com/decolua/9router/commit/992f4db4a0d858bcc86b4786f2abab117a6ccdf8", "tags": ["x_refsource_MISC"], "url": "https://github.com/decolua/9router/commit/992f4db4a0d858bcc86b4786f2abab117a6ccdf8"}], "affected": [{"vendor": "decolua", "product": "9router", "versions": [{"version": ">= 0.4.30, < 0.4.37", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-15T20:41:06.937Z"}, "descriptions": [{"lang": "en", "value": "9Router is an AI router & token saver. From 0.4.30 until 0.4.37, 9Router's src/proxy.js middleware did not protect /api/cli-tools/* and /api/mcp/*, allowing unauthenticated registration of customPlugins through src/app/api/cli-tools/cowork-settings/route.js and command execution through the MCP bridge. This vulnerability is fixed in 0.4.37."}], "source": {"advisory": "GHSA-fhh6-4qxv-rpqj", "discovery": "UNKNOWN"}}}}

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