Unrated severityNVD Advisory· Published Jul 10, 2026· Updated Jul 14, 2026
Instant Appointment <= 1.2 - Unauthenticated Arbitrary File Upload
CVE-2026-15282
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.
Affected products
1- Range: <=1.2
Patches
Vulnerability mechanics
References
4- plugins.trac.wordpress.org/browser/instant-appointment/trunk/includes/ajax/ajax_services.phpmitre
- plugins.trac.wordpress.org/browser/instant-appointment/trunk/includes/front-end/ajax/login_ajax.phpmitre
- plugins.trac.wordpress.org/browser/instant-appointment/trunk/includes/front-end/ajax/login_ajax.phpmitre
- www.wordfence.com/threat-intel/vulnerabilities/id/097b1530-64fa-45b2-85f3-c6a2311405b5mitre
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