CVE-2026-73483

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An authenticated user with access to the /api/v1/node-custom-function endpoint can escape the sandbox by supplying attacker-controlled executablePath and args parameters to puppeteer.launch(), which internally invokes child_process.spawn() outside the sandbox boundary. This allows execution of arbitrary OS commands as the Flowise process user (root in the official Docker image) and arbitrary host file disclosure via Chromium's file:// URL handling. In versions 3.0.8\u20133.1.2 exploitation requires ALLOW_BUILTIN_DEP=true; earlier versions are exploitable by default. Fixed in 3.1.3."}, {"lang": "es", "value": "Flowise (paquetes flowise y flowise-components) en versiones menor o igual que 3.1.2 contienen un escape de sandbox en el sandbox JavaScript vm2/@flowiseai/nodevm. Un usuario autenticado con acceso al endpoint /api/v1/node-custom-function puede escapar del sandbox al proporcionar par\u00e1metros executablePath y args controlados por el atacante a puppeteer.launch(), que invoca internamente child_process.spawn() fuera del l\u00edmite del sandbox. Esto permite la ejecuci\u00f3n de comandos arbitrarios del sistema operativo como el usuario del proceso de Flowise (root en la imagen oficial de Docker) y la divulgaci\u00f3n arbitraria de archivos del host a trav\u00e9s del manejo de URL file: // de Chromium. En las versiones 3.0.8-3.1.2 la explotaci\u00f3n requiere ALLOW_BUILTIN_DEP=true; las versiones anteriores son explotables por defecto. 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