XML External Entity (XXE) Injection

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to XML External Entity XXE Injection via the scan method in the XmlScanner class. Exploiting this vulnerability is possible when...

CVE-2024-45293

CVE-2024-45293 involves an XXE in PHPSpreadsheet’s XLSX reader where the security scanner that prevents XXE can be bypassed by whitespace in the XML encoding attribute, allowing a crafted XLSX to disclose server data. The root cause is a flawed XML encoding check in XmlScanner.php that defaults t...