CVE-2026-87115
Remote code execution
- Published3 Oct 2026
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.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HRemediation
No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.
References
- https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/controllers/confirmapp.php#L88
- https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/helpers/libraries/customfields/types/file.php#L131
- https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/helpers/libraries/customfields/types/file.php#L53
- https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/vikappointments.php#L237
- https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/controllers/confirmapp.php#L88
- https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/helpers/libraries/customfields/types/file.php#L131
- https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/helpers/libraries/customfields/types/file.php#L53
- https://plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/vikappointments.php#L237
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3721264%40vikappointments&new=3721264%40vikappointments
- https://www.wordfence.com/threat-intel/vulnerabilities/id/75fc5df5-a774-4fe1-8452-d35ba7b69081?source=cve
Related CVEs
Recent high-severity vulnerabilities sharing a weakness type.
Frequently asked
Is CVE-2026-87115 being actively exploited?
CVE-2026-87115 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.88%.
How severe is CVE-2026-87115?
CVE-2026-87115 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.88% probability of exploitation.
How do I fix CVE-2026-87115?
Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2026-87115 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.