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.
History

Wed, 15 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 15 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Owen
Owen webstack
Wordpress
Wordpress wordpress
Vendors & Products Owen
Owen webstack
Wordpress
Wordpress wordpress

Wed, 15 Apr 2026 04:00:00 +0000

Type Values Removed Values Added
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.
Title WebStack <= 1.2024 - Unauthenticated Arbitrary File Upload
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2026-04-15T03:37:20.474Z

Updated: 2026-04-15T15:53:23.768Z

Reserved: 2026-01-28T17:18:24.254Z

Link: CVE-2026-1555

cve-icon Vulnrichment

Updated: 2026-04-15T15:52:30.345Z

cve-icon NVD

Status : Received

Published: 2026-04-15T04:17:33.600

Modified: 2026-04-15T04:17:33.600

Link: CVE-2026-1555

cve-icon Redhat

No data.