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

CVE-2021-24941

Medium
6.1/10

Summary

The Popups, Welcome Bar, Optins and Lead Generation Plugin WordPress plugin before 2.0.5 does not sanitise and escape the message_id parameter of the get_message_action_row AJAX action before outputting it back in an attribute, leading to a reflected Cross-Site Scripting issue

  • 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