The vulnerability of the Convert-Online.php script (phpoffice/phpspreadsheet/samples/Engineering/Convert-Online.php) in the PhpSpreadsheet PHP library allows attackers to perform cross-site scripting attacks.

The vulnerability of the Convert-Online.php script phpoffice/phpspreadsheet/samples/Engineering/Convert-Online.php in the PhpSpreadsheet library is related to the lack of measures taken to protect the website structure. Exploiting this vulnerability allows a malicious actor to perform cross-site...