{"id":"CVE-2026-63732","state":"PUBLISHED","title":"9router before 0.4.60 Remote Code Execution via default password","description":"9router 0.4.59 (fixed in 0.4.60) contains a chain of vulnerabilities: a hardcoded default password (123456) that authenticates any fresh installation, a bypass of the LOCAL_ONLY network gate via a spoofed Host header, and unvalidated arguments passed to child_process.spawn() when registering MCP plugins. A remote, unauthenticated attacker can log in with the default credential, spoof the Host header to reach local-only routes, and register a malicious MCP plugin (e.g. node -e <payload>) to achieve arbitrary code execution on the host operating system when the plugin's SSE endpoint is triggered.","publishedAt":"2026-07-23T21:16:46.266Z","updatedAt":"2026-07-27T16:19:25.094Z","severity":{"score":9.4,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","source":"VulnCheck"},"assigner":"VulnCheck","products":["decolua 9router"],"affected":[{"vendor":"decolua","product":"9router","packageURL":"pkg:npm/9router","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.4.60","versionType":"semver"},{"version":"0.4.60","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/decolua/9router/security/advisories/GHSA-4922-8r65-fq26","https://www.vulncheck.com/advisories/9router-before-remote-code-execution-via-default-password"],"weaknesses":["CWE-78"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63732.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63732","state":"PUBLISHED","datePublished":"2026-07-23T21:16:46.266Z","dateUpdated":"2026-07-27T16:19:25.094Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-07-18T12:19:06.903Z"},"containers":{"cna":{"title":"9router before 0.4.60 Remote Code Execution via default password","descriptions":[{"lang":"en","value":"9router 0.4.59 (fixed in 0.4.60) contains a chain of vulnerabilities: a hardcoded default password (123456) that authenticates any fresh installation, a bypass of the LOCAL_ONLY network gate via a spoofed Host header, and unvalidated arguments passed to child_process.spawn() when registering MCP plugins. A remote, unauthenticated attacker can log in with the default credential, spoof the Host header to reach local-only routes, and register a malicious MCP plugin (e.g. node -e <payload>) to achieve arbitrary code execution on the host operating system when the plugin's SSE endpoint is triggered."}],"affected":[{"vendor":"decolua","product":"9router","packageURL":"pkg:npm/9router","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.4.60","versionType":"semver"},{"version":"0.4.60","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/decolua/9router/security/advisories/GHSA-4922-8r65-fq26","name":"GitHub Security Advisory (GHSA-4922-8r65-fq26)","tags":["vendor-advisory"]},{"url":"https://www.vulncheck.com/advisories/9router-before-remote-code-execution-via-default-password","name":"VulnCheck Advisory: 9router before 0.4.60 Remote Code Execution via default password","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","baseScore":9.4,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.9,"baseSeverity":"CRITICAL"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-07-23T21:16:46.266Z"},"datePublic":"2026-07-03T00:00:00.000Z","credits":[{"lang":"en","value":"darealDanh","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-27T16:14:47.859374Z","id":"CVE-2026-63732","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-27T16:19:25.094Z"}}]}}}