{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-49481", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-30T04:17:43.095Z", "datePublished": "2026-08-12T23:08:45.158Z", "dateUpdated": "2026-08-12T23:08:45.158Z"}, "containers": {"cna": {"title": "UpSnap vulnerable to Remote Code Execution via IP Field Template Injection in wake_cmd/shutdown_cmd", "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"}]}], "metrics": [{"cvssV3_1": {"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"}}], "references": [{"name": "https://github.com/seriousm4x/UpSnap/security/advisories/GHSA-6mc7-6948-w5h4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/seriousm4x/UpSnap/security/advisories/GHSA-6mc7-6948-w5h4"}, {"name": "https://github.com/seriousm4x/UpSnap/releases/tag/5.4.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/seriousm4x/UpSnap/releases/tag/5.4.0"}], "affected": [{"vendor": "seriousm4x", "product": "UpSnap", "versions": [{"version": "< 5.4.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-12T23:08:45.158Z"}, "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."}], "source": {"advisory": "GHSA-6mc7-6948-w5h4", "discovery": "UNKNOWN"}}}}

{}

{"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."}], "id": "CVE-2026-49481", "lastModified": "2026-08-12T23:17:21.363", "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"}]}, "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": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-08-13T02:15:02.663374+00:00", "updated": "2026-08-13T02:15:02.663381+00:00", "vendors": []}