PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. `\PhpOffice\PhpSpreadsheet\Writer\Html` does not sanitize "javascript:" URLs from hyperlink `href` attributes, resulting in a Cross-Site Scripting vulnerability. This issue has been addressed in release versions 1.29.2, 2.1.1, and 2.3.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| phpoffice/phpspreadsheet(Packagist) | 2.2.0 | 2.3.0 | N/A |
| phpoffice/phpspreadsheet(Packagist) | 0 | 1.29.2 | N/A |
| phpoffice/phpspreadsheet(Packagist) | 2.0.0 | 2.1.1 | N/A |
| phpoffice/phpexcel(Packagist) | 0 | N/A | N/A |
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