Critical severity9.8NVD Advisory· Published Apr 15, 2026· Updated Apr 22, 2026
CVE-2026-1555
CVE-2026-1555
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.
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (April 13, 2026 to April 19, 2026)Wordfence Blog · Apr 23, 2026