CVE-2026-15282
CriticalCVSS 9.8Exploitation Probability (EPSS)
Elevated risk50th percentile - higher than 50% of all known CVEs
Summary
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 allows unauthenticated attackers to upload arbitrary files on the server, potentially leading to remote code execution.
Risk Assessment
The risk for the organization includes potential server compromise through remote code execution, which could lead to data loss, system integrity breaches, and further attacks.
Recommendation
It is recommended to immediately update the Instant Appointment plugin to the latest available version that includes a security fix for arbitrary file uploads.
Original NVD description (English source)
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.