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CVE-2025-12842

MEDIUM 5.3 CVSS 3.1
Published
November 19, 2025
Last modified
October 18, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-20
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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 WordPress components

  • Time Slot – Booking and Appointment System Plugin · timeslot
    Confirmed match Active
    Up to and including 1.4.7
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • timeslotplugins Time Slot – Booking and Appointment System — Up to and including 1.4.7

References

  • 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=
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/087b6943-5da8-44fe-8614-832768444178?source=cve
  • nvd.nist.gov Official NVD record