CVE-2025-13660 Guest Support <= 1.2.3 - Unauthenticated User Email Disclosure in guest_support_handler AJAX Endpoint
Unauthenticated attackers can enumerate user accounts and extract email addresses via a public AJAX endpoint in the Guest Support plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-13660?
CVE-2025-13660 is a medium-severity vulnerability in rcatheme Guest Support, published on 12 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-200
Which versions are affected by CVE-2025-13660?
How do I fix CVE-2025-13660?
No fix has been published for CVE-2025-13660 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-13660 being exploited?
There is no known exploitation of CVE-2025-13660 in the wild and no public exploit code.
Sources
Also known as GHSA-q9hm-444g-qc4h.