CVE-2026-49819 UpSnap - Unauthenticated Initial-Superuser Takeover Chains to Root RCE via wake_cmd

UpSnap is a wake on lan web app. Versions 4.4.1 through 5.3.5 are vulnerable to a missing-authentication / privilege-escalation chain in pb.HandlerInitSuperuser backend/pb/handlers.go:249, reachable as POST /api/upsnap/init-superuser. The vulnerable code lacks any authentication, setup token, IP...

CVE-2026-49481 UpSnap vulnerable to Remote Code Execution via IP Field Template Injection in wake_cmd/shutdown_cmd

UpSnap is a wake on lan web app. Versions prior to 5.4.0 have an OS command injection vulnerability in the UpSnap’s 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...

CVE-2026-49481

UpSnap (wake on LAN web app) before version 5.4.0 is affected by an authenticated OS command injection in device management. User-controlled ip/mac values can be interpolated into wake_cmd/shutdown_cmd templates and executed via /bin/sh -c (Linux) or cmd /C (Windows) without sanitization, enablin...