CVE-2025-12842 Booking Plugin for WordPress Appointments – Time Slot <= 1.4.7 - Unauthenticated Arbitrary Email Sending
Unauthenticated attackers can send arbitrary emails via the plugin, enabling spam or phishing campaigns.
- 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-2025-12842?
CVE-2025-12842 is a medium-severity vulnerability in timeslotplugins Time Slot – Booking and Appointment System, published on 19 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Booking Plugin for WordPress Appointments – Time Slot plugin for WordPress is vulnerable to unauthorized email sending in versions up to, and including, 1.4.7 due to missing validation on the tslot_appt_email AJAX action. This makes it possible for unauthenticated attackers to send appointment notification emails to arbitrary recipients with attacker-controlled text content in certain email fields, potentially enabling the site to be abused for phishing campaigns or spam distribution.
Weakness: CWE-20
Which versions are affected by CVE-2025-12842?
How do I fix CVE-2025-12842?
No fix has been published for CVE-2025-12842 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-12842 being exploited?
There is no known exploitation of CVE-2025-12842 in the wild and no public exploit code.
Sources
Also known as GHSA-474f-9w4x-43hr.