{"api_version":"1","generated_at":"2026-07-23T11:54:13+00:00","cve":"CVE-2026-46339","urls":{"html":"https://cve.report/CVE-2026-46339","api":"https://cve.report/api/cve/CVE-2026-46339.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46339","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46339"},"summary":{"title":"9Router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes","description":"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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-07-15 21:16:50","updated_at":"2026-07-16 14:16:52"},"problem_types":["CWE-78","CWE-306","CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","CWE-306 CWE-306: Missing Authentication for Critical Function"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"10","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","baseScore":10,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"10","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","data":{"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":[{"url":"https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj","name":"https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj","refsource":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/decolua/9router/commit/992f4db4a0d858bcc86b4786f2abab117a6ccdf8","name":"https://github.com/decolua/9router/commit/992f4db4a0d858bcc86b4786f2abab117a6ccdf8","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46339","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46339","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"decolua","product":"9router","version":"affected >= 0.4.30, < 0.4.37","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46339","cve":"CVE-2026-46339","epss":"0.045720000","percentile":"0.905810000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-46339","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-07-16T12:55:18.873125Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-07-16T12:55:46.031Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["exploit"],"url":"https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"9router","vendor":"decolua","versions":[{"status":"affected","version":">= 0.4.30, < 0.4.37"}]}],"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."}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-15T20:41:06.937Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"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"}],"source":{"advisory":"GHSA-fhh6-4qxv-rpqj","discovery":"UNKNOWN"},"title":"9Router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-46339","datePublished":"2026-07-15T20:41:06.937Z","dateReserved":"2026-05-13T18:37:30.990Z","dateUpdated":"2026-07-16T12:55:46.031Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-15 21:16:50","lastModifiedDate":"2026-07-16 14:16:52","problem_types":["CWE-78","CWE-306","CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","CWE-306 CWE-306: Missing Authentication for Critical Function"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","baseScore":10,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-16T12:55:18.873125Z","id":"CVE-2026-46339","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46339","Ordinal":"1","Title":"9Router: Unauthenticated Remote Code Execution via unprotected M","CVE":"CVE-2026-46339","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46339","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"9Router: Unauthenticated Remote Code Execution via unprotected M"}]}}}