CVE-2026-59800

{"id": "CVE-2026-59800", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59800", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-07T19:07:58.646180Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.2, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"repo": "https://github.com/decolua/9router", "vendor": "decolua", "product": "9router", "versions": [{"status": "affected", "version": "0", "lessThan": "0.4.44", "versionType": "semver"}, {"status": "unaffected", "version": "0.4.44", "versionType": "semver"}], "packageURL": "pkg:npm/9router", "defaultStatus": "unaffected"}]}], "published": "2026-07-07T19:16:55.260", "references": [{"url": "https://github.com/decolua/9router/security/advisories/GHSA-g6g7-pvmx-m74p", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/9router-os-command-injection-via-sudopassword-parameter-in-tailscale-install-endpoint", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/decolua/9router/security/advisories/GHSA-g6g7-pvmx-m74p", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-78"}]}], "descriptions": [{"lang": "en", "value": "9Router before 0.4.44 contains an OS command injection vulnerability in the unauthenticated POST /api/tunnel/tailscale-install endpoint (this route is not covered by the dashboard middleware matcher, so no authorization check is applied). The sudoPassword field from the request body is written to the stdin of a 'sudo -S sh' child process. When sudo does not prompt for a password (the process runs as root, NOPASSWD is configured, or a recent sudo timestamp cache exists), the sudoPassword value is interpreted by sh as a shell command, allowing a remote unauthenticated attacker to execute arbitrary OS commands. Exploitation evidence was first observed by the Shadowserver Foundation on 2026-07-04 (UTC)."}, {"lang": "es", "value": "9Router antes de 0.4.44 contiene una vulnerabilidad de inyecci\u00f3n de comandos del sistema operativo en el endpoint POST /api/tunnel/tailscale-install no autenticado (esta ruta no est\u00e1 cubierta por el middleware matcher del panel de control, por lo que no se aplica ninguna comprobaci\u00f3n de autorizaci\u00f3n). El campo sudoPassword del cuerpo de la solicitud se escribe en la entrada est\u00e1ndar (stdin) de un proceso hijo \u2019sudo -S sh\u2019. Cuando sudo no solicita una contrase\u00f1a (el proceso se ejecuta como root, NOPASSWD est\u00e1 configurado o existe una cach\u00e9 de marca de tiempo de sudo reciente), el valor de sudoPassword es interpretado por sh como un comando de shell, permitiendo a un atacante remoto no autenticado ejecutar comandos arbitrarios del sistema operativo. La evidencia de explotaci\u00f3n fue observada por primera vez por la Shadowserver Foundation el 04-07-2026 (UTC)."}], "lastModified": "2026-10-25T20:10:00.147", "sourceIdentifier": "disclosure@vulncheck.com"}