Language: PHP
Label: safe
CWE: CWE-79 \u2014 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Code:
    public function isValidConfigName(string $configName) {
        if(!preg_match('/^[a-zA-Z0-9_\-]+$/', $configName)) {
            throw new \Exception('The customer report name is invalid');
        }
    }