CVE-2026-87115

Critical

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.

SeverityCritical
CVSS9.1
Exploit probability—
ProductVikAppointments Services Booking Calendar
PublishedOct 3, 2026
First seenOct 3, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
e4jvikwp VikAppointments Services Booking Calendarv ≤ 1.2.21—

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