{"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":"2026-07-16T12:55:46.031Z"},"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"}},"adp":[{"references":[{"url":"https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-16T12:55:18.873125Z","id":"CVE-2026-46339","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":"2026-07-16T12:55:46.031Z"}}]}}