CVE-2025-13754 Missing authorization in Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
Unauthenticated attackers can access an admin endpoint to extract private business configuration and potentially API keys from the Simply Schedule Appointments 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-2025-13754?
CVE-2025-13754 is a medium-severity missing authorization vulnerability in croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin, published on 19 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6.9.16. This is due to the plugin exposing its admin embed endpoint at `/wp-json/ssa/v1/embed-inner-admin` without authentication, which leaks plugin settings including staff names, business names, and configuration data that are not publicly displayed on the booking form. This makes it possible for unauthenticated attackers to extract private business configuration. In premium versions with integrations configured, this might also expose other sensitive data including API keys for external services.
Weakness: CWE-862
Which versions are affected by CVE-2025-13754?
How do I fix CVE-2025-13754?
No fix has been published for CVE-2025-13754 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-13754 being exploited?
There is no known exploitation of CVE-2025-13754 in the wild and no public exploit code.
Sources
Also known as GHSA-wjwr-77x9-rqfh.