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

CVE-2021-39322

Severity Medium
Score 6.1/10

Summary

The Easy Social Icons plugin <= 3.0.8 for WordPress echoes out the raw value of `$_SERVER['PHP_SELF']` in its main file. On certain configurations including Apache+modPHP this makes it possible to use it to perform a reflected Cross-Site Scripting attack by injecting malicious code in the request path.

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

References

Advisory Timeline

  • Published