
El WebProfiler de Symfony expone rutas internas del servidor si no está deshabilitado en producción
Directory Traversal and file exposure • CVE-2021-21424 • Description: WebProfiler exposes internal server paths if it is not disabled in production. • Affected versions: Symfony 2.8 to 5.x. • Typical bypass: direct access to /app_dev.php/_profiler/.
Summary of CVE-2021-21424
• CVE: 2021-21424
• Component: Web Profiler / Dev Toolbar
• Impact: Exposure of sensitive information (environment, paths, parameters)
• Requirement: That /app_dev.php, /_profiler or /_wdt are accessible from production.
• Risk: Allows privilege escalation, access to environment variables, credentials, internal paths, request debugging and controller profiling.