CVE-2026-15282

CRITICAL9.8

Instant Appointment <= 1.2 - Unauthenticated Arbitrary File Upload

Published Jul 10, 2026

Modified 2 days ago

Details

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.

References

WEB

https://plugins.trac.wordpress.org/browser/instant-appointment/trunk/includes/ajax/ajax_services.php#L3

WEB

https://plugins.trac.wordpress.org/browser/instant-appointment/trunk/includes/front-end/ajax/login_ajax.php#L584

WEB

https://plugins.trac.wordpress.org/browser/instant-appointment/trunk/includes/front-end/ajax/login_ajax.php#L598

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-15282

WEB

https://www.wordfence.com/threat-intel/vulnerabilities/id/097b1530-64fa-45b2-85f3-c6a2311405b5?source=cve

CVSS Analysis