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

CVE-2024-45292

Severity Medium
Score 5.4/10

Summary

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The "\PhpOffice\PhpSpreadsheet\Writer\Html" component does not sanitize "javascript:" URLs from hyperlink href attributes, resulting in a Cross-Site Scripting (XSS) vulnerability. This issue affects versions prior to 1.29.2, 2.0.x prior to 2.1.1, and 2.2.x prior to 2.3.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.

  • LOW
  • NETWORK
  • LOW
  • CHANGED
  • REQUIRED
  • LOW
  • LOW
  • NONE

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.

Advisory Timeline

  • Published