CVE-2026-49481

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{"affected": [{"affectedData": [{"product": "UpSnap", "vendor": "seriousm4x", "versions": [{"status": "affected", "version": "< 5.4.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "UpSnap is a wake on lan web app. Versions prior to 5.4.0 have an OS command injection vulnerability in the UpSnap\u2019s device management functionality due to the presence of unsafe shell command template interpolation using the ip and the mac fields. User-controlled values can be inserted into the wake_cmd and shutdown_cmd templates and executed via /bin/sh -c (Linux) or cmd /C (Windows) without sanitization, resulting in an authenticated Remote Code Execution (RCE). A low-privileged user with permission to create or edit devices can execute arbitrary operating system commands on the UpSnap hosted server. Version 5.4.0 patches the issue."}, {"lang": "es", "value": "UpSnap es una aplicaci\u00f3n web de wake on lan. Las versiones anteriores a la 5.4.0 tienen una vulnerabilidad de inyecci\u00f3n de comandos del sistema operativo en la funcionalidad de gesti\u00f3n de dispositivos de UpSnap debido a la presencia de interpolaci\u00f3n insegura de plantillas de comandos de shell utilizando los campos ip y mac. Valores controlados por el usuario pueden insertarse en las plantillas wake_cmd y shutdown_cmd y ejecutarse a trav\u00e9s de /bin/sh -c (Linux) o cmd /C (Windows) sin sanitizaci\u00f3n, lo que resulta en una Ejecuci\u00f3n Remota de C\u00f3digo (RCE) autenticada. Un usuario con privilegios bajos con permiso para crear o editar dispositivos puede ejecutar comandos arbitrarios del sistema operativo en el servidor que aloja UpSnap. La versi\u00f3n 5.4.0 corrige el problema."}], "id": "CVE-2026-49481", "lastModified": "2026-10-24T16:10:00.153", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 5.8, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49481", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-13T17:50:36.206615Z", "version": "2.0.3"}}]}, "published": "2026-08-12T23:17:21.363", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/seriousm4x/UpSnap/releases/tag/5.4.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/seriousm4x/UpSnap/security/advisories/GHSA-6mc7-6948-w5h4"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.4.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "UpSnap", "source": "cna", "vendor": "seriousm4x"}, "product": "upsnap", "vendor": "seriousm4x"}], "created": "2026-08-13T02:15:02.663374+00:00", "updated": "2026-08-13T09:47:36.646589+00:00", "vendors": ["seriousm4x", "seriousm4x$PRODUCT$upsnap"]}