PHPOffice PhpSpreadsheet input validation error vulnerability

PHPOffice PhpSpreadsheet versions 1.30.7, 2.1.19, 2.4.8, 3.10.8, and earlier versions prior to 5.10.0 contain a security vulnerability. This vulnerability arises because the DOCTYPE detection mechanism in XmlScanner::scan fails to account for ISO-2022 escaped sequences within XLSX XML sections. A...