Unauthorized Reflected Cross-Site Scripting in PhpSpreadsheet Product by PHPOffice

CVE-2024-56366

What is CVE-2024-56366?

PhpSpreadsheet is a widely used PHP library designed for generating and manipulating spreadsheet files. Recent findings indicate that versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 are susceptible to unauthorized reflected cross-site scripting (XSS) due to a flaw in the ‘Accounting.php’ file. This vulnerability enables attackers to exploit the library through the sample script located at /vendor/phpoffice/phpspreadsheet/samples/Wizards/NumberFormat/Accounting.php, facilitating potential XSS attacks. Users are recommended to upgrade to the latest patched versions to mitigate the risk associated with this vulnerability.

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