Security Advisory
CVE-2026-15282
9.8
CRITICAL
Vulnerability Description
The Instant Appointment plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'insapp_upload_image_as_attachment' function in all versions up to, and including, 1.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
Published Date
July 10, 2026
Official Source
NIST NVD Advisory