CVE-2024-47873
High
Description
PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. The XmlScanner class has a scan method which should prevent XXE attacks. However, prior to versions 1.9.4, 2.1.3, 2.3.2, and 3.4.0, the regexes used in the `scan` method and the findCharSet method can be bypassed by using UCS-4 and encoding guessing. An attacker can bypass the sanitizer and achieve an XML external entity attack. Versions 1.9.4, 2.1.3, 2.3.2, and 3.4.0 fix the issue.
SeverityHigh
CVSS7.5
Exploit probability—
ProductPhpoffice Phpspreadsheet
PublishedNov 18, 2024
First seenNov 18, 2024
Weakness typeCWE-611XML external entity (XXE)
How to fix
Update
- phpoffice phpspreadsheet1.29.4, 2.1.3, 2.3.2, 3.4.0 or later
- phpoffice/phpspreadsheet1.29.4, 2.1.3, 2.3.2, 3.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| phpoffice phpspreadsheet | v < 1.29.4, 2.0.0 ≤ v < 2.1.3, 2.2.0 ≤ v < 2.3.2, 3.3.0 ≤ v < 3.4.0 | 1.29.4, 2.1.3, 2.3.2, 3.4.0 |
| phpoffice/phpspreadsheetPackagist | v < 1.29.4, 2.0.0 ≤ v < 2.1.3, 2.2.0 ≤ v < 2.3.2, 3.3.0 ≤ v < 3.4.0 | 1.29.4, 2.1.3, 2.3.2, 3.4.0 |
| phpoffice/phpexcelPackagist | v ≤ 1.8.2 | — |
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