VikAppointments Services Booking Calendar <= 1.2.21 - Unauthenticated Arbitrary File Deletion via 'old_vapcfN' Parameter
Summary
| CVE | CVE-2026-87115 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-03 07:16:48 UTC |
| Updated | 2026-10-03 16:16:40 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 9.1 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Problem Types: CWE-22 | CWE-22 CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 9.1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| 3.1 | CNA | DECLARED | 9.1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | E4jvikwp | VikAppointments Services Booking Calendar | affected 1.2.21 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/helpers/libraries/cu... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/vikappointments.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/75fc5df5-a774-4fe1-8452-d35ba... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/controllers/confirma... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/helpers/libraries/cu... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.19/site/helpers/libraries/cu... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/vikappointments.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/controllers/confirma... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/vikappointments/tags/1.2.21/site/helpers/libraries/cu... | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: zickzick2 (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-09-08T21:01:02.000Z | Vendor Notified |
| CNA | 2026-10-02T17:35:22.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.