CVE-2026-1555
CRITICAL
NVD
CVSS Score
9.8
Severity
CRITICAL
Published
Apr 15, 2026
Vendor
unknown
Description
The WebStack theme for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the io_img_upload() function in all versions up to, and including, 1.2024. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.