Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Phpoffice | Phpspreadsheet | < 1.29.4 |
Related Weaknesses (CWE)
References
- https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45efProduct
- https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jw4x-v69f-hExploitVendor Advisory
- https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_ProcesNot Applicable
- https://www.w3.org/TR/xml/#sec-guessing-no-ext-infoTechnical Description
FAQ
What is CVE-2024-47873?
CVE-2024-47873 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2024-47873?
CVE-2024-47873 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-47873?
Check the references section above for vendor advisories and patch information. Affected products include: Phpoffice Phpspreadsheet.