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CVE-2026-87115

CRITICAL 9.1 CVSS 3.1
Published
October 3, 2026
Last modified
October 6, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-22
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Description

The VikAppointments Services Booking Calendar plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the extract function in all versions up to, and including, 1.2.21. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). Exploitation requires at least one File-type custom field to be published on the confirmation page shortcode, as this field is not created by default during plugin installation.

Affected WordPress components

  • VikAppointments Services Booking Calendar Plugin · vikappointments
    Confirmed match Active
    Up to and including 1.2.21
    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

  • e4jvikwp VikAppointments Services Booking Calendar — Up to and including 1.2.21

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/controllers/confirmapp.php#L88
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/helpers/libraries/customfields/types/file.php#L131
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/helpers/libraries/customfields/types/file.php#L53
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/vikappointments.php#L237
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/controllers/confirmapp.php#L88
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/helpers/libraries/customfields/types/file.php#L131
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/helpers/libraries/customfields/types/file.php#L53
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/vikappointments.php#L237
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&old=3721264%40vikappointments&new=3721264%40vikappointments
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/75fc5df5-a774-4fe1-8452-d35ba7b69081?source=cve
  • nvd.nist.gov Official NVD record