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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/instant-appointment/trunk/includes/aj
- https://plugins.trac.wordpress.org/browser/instant-appointment/trunk/includes/fr
- https://plugins.trac.wordpress.org/browser/instant-appointment/trunk/includes/fr
- https://www.wordfence.com/threat-intel/vulnerabilities/id/097b1530-64fa-45b2-85f
FAQ
What is CVE-2026-15282?
CVE-2026-15282 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...
How severe is CVE-2026-15282?
CVE-2026-15282 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-15282?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.