LARAVEL <= V8.4.2 DEBUG MODE - REMOTE CODE EXECUTION Vulnerability CVE-2021-3129 Scanner Detail
Laravel, Ignition before 2.5.2 allows unauthenticated remote attackers to execute arbitrary code.
Ignition before 2.5.2, as used in Laravel and other products, allows unauthenticated remote attackers to execute arbitrary code because of insecure usage of file_get_contents() and file_put_contents(). This is exploitable on sites using debug mode with Laravel before 8.4.2.
Some Advice for Common Problems
You should update to latest version.