CVE-2026-87115: critical vulnerability in e4jvikwp VikAppointments Services Booking…
VikAppointments Services Booking Calendar <= 1.2.21 - Unauthenticated Arbitrary File Deletion via 'old_vapcfN' Parameter
Published
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.9%
exploitation probability
0.9%top 42% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
e4jvikwp · VikAppointments Services Booking CalendarRelated CVEs — e4jvikwp VikAppointments Services Booking…
In the same product, most dangerous first.
CVE-2026-15918HIGHVikAppointments – Services Booking Calendar <= 1.2.19 - Unauthenticated SQL InjectionEPSS 0.5%CVE-2026-84768CRITICALWordPress VikAppointments Services Booking Calendar plugin <= 1.2.20 - SQL Injection vulnerabilityEPSS 0.4%CVE-2025-22719HIGHWordPress VikAppointments Services Booking Calendar plugin <= 1.2.16 - CSRF to Stored XSS vulnerabilityEPSS 0.3%
References
https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/controllers/confirmapp.php#L88https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/helpers/libraries/customfields/types/file.php#L131https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/helpers/libraries/customfields/types/file.php#L53https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/vikappointments.php#L237https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/controllers/confirmapp.php#L88https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/helpers/libraries/customfields/types/file.php#L131https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/helpers/libraries/customfields/types/file.php#L53https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/vikappointments.php#L237https://plugins.trac.wordpress.org/changeset?reponame=&old=3721264%40vikappointments&new=3721264%40vikappointmentshttps://www.wordfence.com/threat-intel/vulnerabilities/id/75fc5df5-a774-4fe1-8452-d35ba7b69081?source=cve