CVE-2025-12842
Booking Plugin for WordPress Appointments – Time Slot <= 1.4.7 - Unauthenticated Arbitrary Email Sending
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 |
| Vendor | timeslotplugins |
| Product | time slot – booking and appointment system |
| Published | Nov 19, 2025 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
timeslotplugins / Time Slot – Booking and Appointment System
0 ≤ 1.4.7
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/087b6943-5da8-44fe-8614-832768444178?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/timeslot/tags/1.4.6/public/form/email.php#L21 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/timeslot/tags/1.4.6/public/form/email.php#L23 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3397527%40timeslot&new=3397527%40timeslot&sfp_email=&sfph_mail=
Credits
Md. Moniruzzaman Prodhan