PHP 8.1 or older? There’s no official patch.
PHP2Shell lets an attacker run code on your web server with a single request and no login. PHP’s fixes, released 21 October, start at 8.2. Older versions stay exposed. NES for PHP has already shipped the fix for PHP 5.6 to 8.1, so you can close it without upgrading first.
Get the PHP2Shell fix →