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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Timeslot Plugin | — | Update timeslot plugin to version 1.4.8, or a newer patched version | Nov 19, 2025 | Nov 18, 2025 |
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