Vulnerability · Published Oct 3, 2026 · Assigned by Wordfence

CVE-2026-87115VikAppointments Services Booking Calendar <= 1.2.21 - Unauthenticated Arbitrary File Deletion via 'old_vapcfN' Parameter

Critical 9.1

In plain English

A critical-severity path traversal in VikAppointments Services Booking Calendar from e4jvikwp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.9%top 40.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 products (as reported)

Vendor	Product	Versions
e4jvikwp	VikAppointments Services Booking Calendar	0 – through 1.2.21

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

In plain English

Official description

Affected products (as reported)

References