Improper Handling of Highly Compressed Data (Data Amplification)

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to Improper Handling of Highly Compressed Data Data Amplification through the gzfileGetContents process. An attacker can exhaust...

PhpSpreadsheet gzfileGetContents() DoS

The vulnerability of the gzfileGetContents method in the src/PhpSpreadsheet/Reader/Gnumeric.php script of the PhpSpreadsheet library is related to incorrect processing of highly compressed input data. Exploiting this vulnerability could allow an attacker to cause a service failure...