Unauthenticated XSS in WPComplete Plugin

Executive Summary

This is an Unauthenticated Cross Site Scripting (XSS) vulnerability in the WPComplete WordPress plugin versions up to 2.9.5.6. It allows attackers to inject malicious scripts into web pages viewed by users. The vulnerability has a CVSS score of 7.1, indicating moderate severity.

Useful 0 Not Useful 0

Detection Guidance

To detect this XSS vulnerability in WPComplete <= 2.9.5.6, inspect WordPress sites for suspicious script injections in user inputs or URLs. Check plugin versions via WordPress admin panel or database. Use security tools like Wordfence or Patchstack to scan for known XSS patterns.

Useful 0 Not Useful 0

Impact Analysis

Attackers could exploit this to inject malicious scripts that execute when visitors access the site. This could lead to actions like redirects, displaying unwanted ads, or stealing user data. Successful exploitation requires a user to click a malicious link or submit a form.

Useful 0 Not Useful 0

Compliance Impact

This XSS vulnerability could potentially expose organizations to compliance risks under GDPR or HIPAA if exploited. Malicious scripts injected via this flaw might steal user data or session cookies, violating data protection requirements for handling personal or health information.

Useful 0 Not Useful 0

Mitigation Strategies

Immediately update WPComplete to version 2.9.5.7 or later. Apply Patchstack's mitigation rule if available. Remove or disable the plugin if updates are not possible. Monitor sites for unusual activity or injected scripts.

Useful 0 Not Useful 0