Knight Squad Academy
Vulnerability advisory

CVE-2025-13660

Research by Md. Moniruzzaman Prodhan December 12, 2025
Overview

Summary

The Guest Support plugin for WordPress is vulnerable to User Email Disclosure in versions up to, and including, 1.2.3. This is due to the plugin exposing a public AJAX endpoint that allows anyone to search for and retrieve user email addresses without any authentication or capability checks. This makes it possible for unauthenticated attackers to enumerate user accounts and extract email addresses via the guest_support_handler=ajax endpoint with the request=get_users parameter.

Risk profile

CVSS assessment

5.3 · M E D I U M
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
N E T W O R K
Complexity
L O W
Privileges
N O N E
User interaction
N O N E
Scope
U N C H A N G E D
Confidentiality
L O W
Integrity
N O N E
Availability
N O N E
Classification

Weaknesses

  • Exposure of Sensitive Information to an Unauthorized Actor CWE-200
Further reading

References

4 sources
  1. plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/guest-support/tags/1.2.3/includes/library/ajax.php#L22
  2. plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/guest-support/trunk/includes/library/ajax.php#L22
  3. plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3412822%40guest-support&new=3412822%40guest-support&sfp_email=&sfph_mail=
  4. www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/01299aba-0dff-47fd-9e90-ee84f00a0f3b?source=cve