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Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE-2025-23210

Medium
4.8/10

Summary

The phpoffice/phpspreadsheet is a pure PHP library for reading and writing spreadsheet files. Affected versions have been found to have a Bypass of the Cross-site Scripting (XSS) sanitizer using the javascript protocol and special characters. This issue affects versions through 1.29.8, 2.0.0 through 2.1.7, 2.2.0 through 2.3.6, and 3.3.0 through 3.8.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

  • LOW
  • NETWORK
  • ACTIVE
  • LOW

CWE-79 - Cross Site Scripting

Cross-Site Scripting, commonly referred to as XSS, is the most dominant class of vulnerabilities. It allows an attacker to inject malicious code into a pregnable web application and victimize its users. The exploitation of such a weakness can cause severe issues such as account takeover, and sensitive data exfiltration. Because of the prevalence of XSS vulnerabilities and their high rate of exploitation, it has remained in the OWASP top 10 vulnerabilities for years.

References

Advisory Timeline

  • Published