https://phpexcel.nkhost.ru/
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https://phpspreadsheet.readthedocs.io/en/latest/topics/migration-from-PHPExcel/
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https://advisories.gitlab.com/composer/phpoffice/phpexcel/CVE-2015-3542/
PHPExcel XXE Vulnerability | GitLab Advisory Database (GLAD)
CVE-2015-3542 PHPExcel XXE Vulnerability: PHPExcel XXE Vulnerability
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