Vulnerability · Published Nov 19, 2025 · Assigned by Wordfence
CVE-2025-12842Booking Plugin for WordPress Appointments – Time Slot <= 1.4.7 - Unauthenticated Arbitrary Email Sending
Medium 5.3
In plain English
A medium-severity improper input validation in Time Slot – Booking and Appointment System from timeslotplugins. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| timeslotplugins | Time Slot – Booking and Appointment System | 0 – through 1.4.7 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/087b6943-5da8-44fe-8614-832768444178?source=cve
- https://plugins.trac.wordpress.org/browser/timeslot/tags/1.4.6/public/form/email.php#L21
- https://plugins.trac.wordpress.org/browser/timeslot/tags/1.4.6/public/form/email.php#L23
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3397527%40timeslot&new=3397527%40timeslot&sfp_email=&sfph_mail=