CVE-2024-45046
Medium
Description
PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In affected versions `\PhpOffice\PhpSpreadsheet\Writer\Html` doesn't sanitize spreadsheet styling information such as font names, allowing an attacker to inject arbitrary JavaScript on the page. As a result an attacker may used a crafted spreadsheet to fully takeover a session of a user viewing spreadsheet files as HTML. This issue has been addressed in release version 2.1.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.
SeverityMedium
CVSS5.4
Exploit probability—
ProductPhpoffice Phpspreadsheet
PublishedAug 28, 2024
First seenAug 28, 2024
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- phpoffice phpspreadsheet1.29.1, 2.1.0 or later
- phpoffice/phpspreadsheet2.1.0, 1.29.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| phpoffice phpspreadsheet | v < 1.29.1, 2.0.0 ≤ v < 2.1.0 | 1.29.1, 2.1.0 |
| phpoffice/phpspreadsheetPackagist | 2.0.0 ≤ v < 2.1.0, v < 1.29.1 | 2.1.0, 1.29.1 |
| phpoffice/phpexcelPackagist | v ≤ 1.8.2 | — |
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