CVE-2026-40902

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.4, 2.1.16, 2.4.5, 3.10.5, and 5.7.0, the XLSX reader's ColumnAndRowAttributes::readRowAttributes method reads row numbers from XML attributes without validating them against the spreadsheet maximum row...

PT-2026-37107

Name of the Vulnerable Software and Affected Versions PhpSpreadsheet versions prior to 1.30.4 PhpSpreadsheet versions prior to 2.1.16 PhpSpreadsheet versions prior to 2.4.5 PhpSpreadsheet versions prior to 3.10.5 PhpSpreadsheet versions prior to 5.7.0 Description The XLSX reader's...

XXE in PHPSpreadsheet's XLSX reader

Summary The XmlScanner class has a scan method which should prevent XXE attacks. However, we found another bypass than the previously reported CVE-2024-47873, the regexes from the findCharSet method, which is used for determining the current encoding can be bypassed by using a payload in the...

CVE-2024-45293

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel XLS...

CVE-2024-45293 XML External Entity Reference (XXE) in PHPSpreadsheet's XLSX reader

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel XLS...