CVE-2024-47873
HIGH WAF: High
CVSS 7.5
Published: 2024-11-18
CWE-611
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.
WAF Coverage Analysis
XML External Entity (XXE)
High WAF Coverage
OWASP: A05:2021 Security Misconfiguration
941xxx - XSS / XXE
Affected Software
| Vendor | Product | Version |
|---|---|---|
| phpoffice | phpspreadsheet | up to 1.29.4 |
| phpoffice | phpspreadsheet | 2.0.0 - 2.1.3 |
| phpoffice | phpspreadsheet | 2.2.0 - 2.3.2 |
| phpoffice | phpspreadsheet | 3.3.0 - 3.4.0 |
References
- github.com (Product)
- github.com (Exploit, Vendor Advisory)
- owasp.org (Not Applicable)
- www.w3.org (Technical Description)